1994915968

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:286

約数の個数: 128

約数和(自身を含む): 4260695040

約数和(自身を除く): 2265779072

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 73, 97, 124, 128, 142, 146, 194, 248, 284, 292, 388, 496, 568, 584, 776, 992, 1136, 1168, 1552, 1984, 2201, 2263, 2272, 2336, 3007, 3104, 3968, 4402, 4526, 4544, 4672, 5183, 6014, 6208, 6887, 7081, 8804, 9052, 9088, 9344, 10366, 12028, 12416, 13774, 14162, 17608, 18104, 20732, 24056, 27548, 28324, 35216, 36208, 41464, 48112, 55096, 56648, 70432, 72416, 82928, 96224, 110192, 113296, 140864, 144832, 160673, 165856, 192448, 213497, 219511, 220384, 226592, 281728, 289664, 321346, 331712, 384896, 426994, 439022, 440768, 453184, 502751, 642692, 663424, 853988, 878044, 881536, 906368, 1005502, 1285384, 1707976, 1756088, 2011004, 2570768, 3415952, 3512176, 4022008, 5141536, 6831904, 7024352, 8044016, 10283072, 13663808, 14048704, 15585281, 16088032, 20566144, 27327616, 28097408, 31170562, 32176064, 62341124, 64352128, 124682248, 249364496, 498728992, 997457984, 1994915968]

約数ペア:

[(1, 1994915968), (2, 997457984), (4, 498728992), (8, 249364496), (16, 124682248), (31, 64352128), (32, 62341124), (62, 32176064), (64, 31170562), (71, 28097408), (73, 27327616), (97, 20566144), (124, 16088032), (128, 15585281), (142, 14048704), (146, 13663808), (194, 10283072), (248, 8044016), (284, 7024352), (292, 6831904), (388, 5141536), (496, 4022008), (568, 3512176), (584, 3415952), (776, 2570768), (992, 2011004), (1136, 1756088), (1168, 1707976), (1552, 1285384), (1984, 1005502), (2201, 906368), (2263, 881536), (2272, 878044), (2336, 853988), (3007, 663424), (3104, 642692), (3968, 502751), (4402, 453184), (4526, 440768), (4544, 439022), (4672, 426994), (5183, 384896), (6014, 331712), (6208, 321346), (6887, 289664), (7081, 281728), (8804, 226592), (9052, 220384), (9088, 219511), (9344, 213497), (10366, 192448), (12028, 165856), (12416, 160673), (13774, 144832), (14162, 140864), (17608, 113296), (18104, 110192), (20732, 96224), (24056, 82928), (27548, 72416), (28324, 70432), (35216, 56648), (36208, 55096), (41464, 48112)]