640355520

素因数分解:

$2^6\times 3^1\times 5^1\times 7^2\times {\mathrm{13613}}^1$

素因数の和:13647

約数の個数: 168

約数和(自身を含む): 2365241904

約数和(自身を除く): 1724886384

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 280, 294, 320, 336, 392, 420, 448, 480, 490, 560, 588, 672, 735, 784, 840, 960, 980, 1120, 1176, 1344, 1470, 1568, 1680, 1960, 2240, 2352, 2940, 3136, 3360, 3920, 4704, 5880, 6720, 7840, 9408, 11760, 13613, 15680, 23520, 27226, 40839, 47040, 54452, 68065, 81678, 95291, 108904, 136130, 163356, 190582, 204195, 217808, 272260, 285873, 326712, 381164, 408390, 435616, 476455, 544520, 571746, 653424, 667037, 762328, 816780, 871232, 952910, 1089040, 1143492, 1306848, 1334074, 1429365, 1524656, 1633560, 1905820, 2001111, 2178080, 2286984, 2613696, 2668148, 2858730, 3049312, 3267120, 3335185, 3811640, 4002222, 4356160, 4573968, 5336296, 5717460, 6098624, 6534240, 6670370, 7623280, 8004444, 9147936, 10005555, 10672592, 11434920, 13068480, 13340740, 15246560, 16008888, 18295872, 20011110, 21345184, 22869840, 26681480, 30493120, 32017776, 40022220, 42690368, 45739680, 53362960, 64035552, 80044440, 91479360, 106725920, 128071104, 160088880, 213451840, 320177760, 640355520]

約数ペア:

[(1, 640355520), (2, 320177760), (3, 213451840), (4, 160088880), (5, 128071104), (6, 106725920), (7, 91479360), (8, 80044440), (10, 64035552), (12, 53362960), (14, 45739680), (15, 42690368), (16, 40022220), (20, 32017776), (21, 30493120), (24, 26681480), (28, 22869840), (30, 21345184), (32, 20011110), (35, 18295872), (40, 16008888), (42, 15246560), (48, 13340740), (49, 13068480), (56, 11434920), (60, 10672592), (64, 10005555), (70, 9147936), (80, 8004444), (84, 7623280), (96, 6670370), (98, 6534240), (105, 6098624), (112, 5717460), (120, 5336296), (140, 4573968), (147, 4356160), (160, 4002222), (168, 3811640), (192, 3335185), (196, 3267120), (210, 3049312), (224, 2858730), (240, 2668148), (245, 2613696), (280, 2286984), (294, 2178080), (320, 2001111), (336, 1905820), (392, 1633560), (420, 1524656), (448, 1429365), (480, 1334074), (490, 1306848), (560, 1143492), (588, 1089040), (672, 952910), (735, 871232), (784, 816780), (840, 762328), (960, 667037), (980, 653424), (1120, 571746), (1176, 544520), (1344, 476455), (1470, 435616), (1568, 408390), (1680, 381164), (1960, 326712), (2240, 285873), (2352, 272260), (2940, 217808), (3136, 204195), (3360, 190582), (3920, 163356), (4704, 136130), (5880, 108904), (6720, 95291), (7840, 81678), (9408, 68065), (11760, 54452), (13613, 47040), (15680, 40839), (23520, 27226)]