21354840

素因数分解:

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

素因数の和:65

約数の個数: 192

約数和(自身を含む): 77968800

約数和(自身を除く): 56613960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 27, 30, 36, 39, 40, 45, 52, 54, 60, 65, 72, 78, 81, 90, 104, 108, 117, 120, 130, 135, 156, 162, 169, 180, 195, 216, 234, 243, 260, 270, 312, 324, 338, 351, 360, 390, 405, 468, 486, 507, 520, 540, 585, 648, 676, 702, 780, 810, 845, 936, 972, 1014, 1053, 1080, 1170, 1215, 1352, 1404, 1521, 1560, 1620, 1690, 1755, 1944, 2028, 2106, 2197, 2340, 2430, 2535, 2808, 3042, 3159, 3240, 3380, 3510, 4056, 4212, 4394, 4563, 4680, 4860, 5070, 5265, 6084, 6318, 6591, 6760, 7020, 7605, 8424, 8788, 9126, 9720, 10140, 10530, 10985, 12168, 12636, 13182, 13689, 14040, 15210, 15795, 17576, 18252, 19773, 20280, 21060, 21970, 22815, 25272, 26364, 27378, 30420, 31590, 32955, 36504, 39546, 41067, 42120, 43940, 45630, 52728, 54756, 59319, 60840, 63180, 65910, 68445, 79092, 82134, 87880, 91260, 98865, 109512, 118638, 126360, 131820, 136890, 158184, 164268, 177957, 182520, 197730, 205335, 237276, 263640, 273780, 296595, 328536, 355914, 395460, 410670, 474552, 533871, 547560, 593190, 711828, 790920, 821340, 889785, 1067742, 1186380, 1423656, 1642680, 1779570, 2135484, 2372760, 2669355, 3559140, 4270968, 5338710, 7118280, 10677420, 21354840]

約数ペア:

[(1, 21354840), (2, 10677420), (3, 7118280), (4, 5338710), (5, 4270968), (6, 3559140), (8, 2669355), (9, 2372760), (10, 2135484), (12, 1779570), (13, 1642680), (15, 1423656), (18, 1186380), (20, 1067742), (24, 889785), (26, 821340), (27, 790920), (30, 711828), (36, 593190), (39, 547560), (40, 533871), (45, 474552), (52, 410670), (54, 395460), (60, 355914), (65, 328536), (72, 296595), (78, 273780), (81, 263640), (90, 237276), (104, 205335), (108, 197730), (117, 182520), (120, 177957), (130, 164268), (135, 158184), (156, 136890), (162, 131820), (169, 126360), (180, 118638), (195, 109512), (216, 98865), (234, 91260), (243, 87880), (260, 82134), (270, 79092), (312, 68445), (324, 65910), (338, 63180), (351, 60840), (360, 59319), (390, 54756), (405, 52728), (468, 45630), (486, 43940), (507, 42120), (520, 41067), (540, 39546), (585, 36504), (648, 32955), (676, 31590), (702, 30420), (780, 27378), (810, 26364), (845, 25272), (936, 22815), (972, 21970), (1014, 21060), (1053, 20280), (1080, 19773), (1170, 18252), (1215, 17576), (1352, 15795), (1404, 15210), (1521, 14040), (1560, 13689), (1620, 13182), (1690, 12636), (1755, 12168), (1944, 10985), (2028, 10530), (2106, 10140), (2197, 9720), (2340, 9126), (2430, 8788), (2535, 8424), (2808, 7605), (3042, 7020), (3159, 6760), (3240, 6591), (3380, 6318), (3510, 6084), (4056, 5265), (4212, 5070), (4394, 4860), (4563, 4680)]