639854280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{809}}^1$

素因数の和:865

約数の個数: 192

約数和(自身を含む): 2255526000

約数和(自身を除く): 1615671720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 312, 338, 360, 390, 468, 507, 520, 585, 676, 780, 809, 845, 936, 1014, 1170, 1352, 1521, 1560, 1618, 1690, 2028, 2197, 2340, 2427, 2535, 3042, 3236, 3380, 4045, 4056, 4394, 4680, 4854, 5070, 6084, 6472, 6591, 6760, 7281, 7605, 8090, 8788, 9708, 10140, 10517, 10985, 12135, 12168, 13182, 14562, 15210, 16180, 17576, 19416, 19773, 20280, 21034, 21970, 24270, 26364, 29124, 30420, 31551, 32360, 32955, 36405, 39546, 42068, 43940, 48540, 52585, 52728, 58248, 60840, 63102, 65910, 72810, 79092, 84136, 87880, 94653, 97080, 98865, 105170, 126204, 131820, 136721, 145620, 157755, 158184, 189306, 197730, 210340, 252408, 263640, 273442, 291240, 315510, 378612, 395460, 410163, 420680, 473265, 546884, 631020, 683605, 757224, 790920, 820326, 946530, 1093768, 1230489, 1262040, 1367210, 1640652, 1777373, 1893060, 2050815, 2460978, 2734420, 3281304, 3554746, 3786120, 4101630, 4921956, 5332119, 5468840, 6152445, 7109492, 8203260, 8886865, 9843912, 10664238, 12304890, 14218984, 15996357, 16406520, 17773730, 21328476, 24609780, 26660595, 31992714, 35547460, 42656952, 49219560, 53321190, 63985428, 71094920, 79981785, 106642380, 127970856, 159963570, 213284760, 319927140, 639854280]

約数ペア:

[(1, 639854280), (2, 319927140), (3, 213284760), (4, 159963570), (5, 127970856), (6, 106642380), (8, 79981785), (9, 71094920), (10, 63985428), (12, 53321190), (13, 49219560), (15, 42656952), (18, 35547460), (20, 31992714), (24, 26660595), (26, 24609780), (30, 21328476), (36, 17773730), (39, 16406520), (40, 15996357), (45, 14218984), (52, 12304890), (60, 10664238), (65, 9843912), (72, 8886865), (78, 8203260), (90, 7109492), (104, 6152445), (117, 5468840), (120, 5332119), (130, 4921956), (156, 4101630), (169, 3786120), (180, 3554746), (195, 3281304), (234, 2734420), (260, 2460978), (312, 2050815), (338, 1893060), (360, 1777373), (390, 1640652), (468, 1367210), (507, 1262040), (520, 1230489), (585, 1093768), (676, 946530), (780, 820326), (809, 790920), (845, 757224), (936, 683605), (1014, 631020), (1170, 546884), (1352, 473265), (1521, 420680), (1560, 410163), (1618, 395460), (1690, 378612), (2028, 315510), (2197, 291240), (2340, 273442), (2427, 263640), (2535, 252408), (3042, 210340), (3236, 197730), (3380, 189306), (4045, 158184), (4056, 157755), (4394, 145620), (4680, 136721), (4854, 131820), (5070, 126204), (6084, 105170), (6472, 98865), (6591, 97080), (6760, 94653), (7281, 87880), (7605, 84136), (8090, 79092), (8788, 72810), (9708, 65910), (10140, 63102), (10517, 60840), (10985, 58248), (12135, 52728), (12168, 52585), (13182, 48540), (14562, 43940), (15210, 42068), (16180, 39546), (17576, 36405), (19416, 32955), (19773, 32360), (20280, 31551), (21034, 30420), (21970, 29124), (24270, 26364)]