1280004960

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{205129}}^1$

素因数の和:205160

約数の個数: 96

約数和(自身を含む): 4342191840

約数和(自身を除く): 3062186880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 6240, 205129, 410258, 615387, 820516, 1025645, 1230774, 1641032, 2051290, 2461548, 2666677, 3076935, 3282064, 4102580, 4923096, 5333354, 6153870, 6564128, 8000031, 8205160, 9846192, 10666708, 12307740, 13333385, 16000062, 16410320, 19692384, 21333416, 24615480, 26666770, 32000124, 32820640, 40000155, 42666832, 49230960, 53333540, 64000248, 80000310, 85333664, 98461920, 106667080, 128000496, 160000620, 213334160, 256000992, 320001240, 426668320, 640002480, 1280004960]

約数ペア:

[(1, 1280004960), (2, 640002480), (3, 426668320), (4, 320001240), (5, 256000992), (6, 213334160), (8, 160000620), (10, 128000496), (12, 106667080), (13, 98461920), (15, 85333664), (16, 80000310), (20, 64000248), (24, 53333540), (26, 49230960), (30, 42666832), (32, 40000155), (39, 32820640), (40, 32000124), (48, 26666770), (52, 24615480), (60, 21333416), (65, 19692384), (78, 16410320), (80, 16000062), (96, 13333385), (104, 12307740), (120, 10666708), (130, 9846192), (156, 8205160), (160, 8000031), (195, 6564128), (208, 6153870), (240, 5333354), (260, 4923096), (312, 4102580), (390, 3282064), (416, 3076935), (480, 2666677), (520, 2461548), (624, 2051290), (780, 1641032), (1040, 1230774), (1248, 1025645), (1560, 820516), (2080, 615387), (3120, 410258), (6240, 205129)]