788891720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:403

約数の個数: 128

約数和(自身を含む): 1935360000

約数和(自身を除く): 1146468280

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 31, 40, 46, 62, 92, 115, 124, 139, 155, 184, 199, 230, 248, 278, 310, 398, 460, 556, 620, 695, 713, 796, 920, 995, 1112, 1240, 1390, 1426, 1592, 1990, 2780, 2852, 3197, 3565, 3980, 4309, 4577, 5560, 5704, 6169, 6394, 7130, 7960, 8618, 9154, 12338, 12788, 14260, 15985, 17236, 18308, 21545, 22885, 24676, 25576, 27661, 28520, 30845, 31970, 34472, 36616, 43090, 45770, 49352, 55322, 61690, 63940, 86180, 91540, 99107, 110644, 123380, 127880, 138305, 141887, 172360, 183080, 198214, 221288, 246760, 276610, 283774, 396428, 495535, 553220, 567548, 636203, 709435, 792856, 857491, 991070, 1106440, 1135096, 1272406, 1418870, 1714982, 1982140, 2544812, 2837740, 3181015, 3429964, 3964280, 4287455, 5089624, 5675480, 6362030, 6859928, 8574910, 12724060, 17149820, 19722293, 25448120, 34299640, 39444586, 78889172, 98611465, 157778344, 197222930, 394445860, 788891720]

約数ペア:

[(1, 788891720), (2, 394445860), (4, 197222930), (5, 157778344), (8, 98611465), (10, 78889172), (20, 39444586), (23, 34299640), (31, 25448120), (40, 19722293), (46, 17149820), (62, 12724060), (92, 8574910), (115, 6859928), (124, 6362030), (139, 5675480), (155, 5089624), (184, 4287455), (199, 3964280), (230, 3429964), (248, 3181015), (278, 2837740), (310, 2544812), (398, 1982140), (460, 1714982), (556, 1418870), (620, 1272406), (695, 1135096), (713, 1106440), (796, 991070), (920, 857491), (995, 792856), (1112, 709435), (1240, 636203), (1390, 567548), (1426, 553220), (1592, 495535), (1990, 396428), (2780, 283774), (2852, 276610), (3197, 246760), (3565, 221288), (3980, 198214), (4309, 183080), (4577, 172360), (5560, 141887), (5704, 138305), (6169, 127880), (6394, 123380), (7130, 110644), (7960, 99107), (8618, 91540), (9154, 86180), (12338, 63940), (12788, 61690), (14260, 55322), (15985, 49352), (17236, 45770), (18308, 43090), (21545, 36616), (22885, 34472), (24676, 31970), (25576, 30845), (27661, 28520)]