640221408

素因数分解:

$2^5\times 3^5\times {\mathrm{281}}^1\times {\mathrm{293}}^1$

素因数の和:599

約数の個数: 144

約数和(自身を含む): 1901246256

約数和(自身を除く): 1261024848

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 81, 96, 108, 144, 162, 216, 243, 281, 288, 293, 324, 432, 486, 562, 586, 648, 843, 864, 879, 972, 1124, 1172, 1296, 1686, 1758, 1944, 2248, 2344, 2529, 2592, 2637, 3372, 3516, 3888, 4496, 4688, 5058, 5274, 6744, 7032, 7587, 7776, 7911, 8992, 9376, 10116, 10548, 13488, 14064, 15174, 15822, 20232, 21096, 22761, 23733, 26976, 28128, 30348, 31644, 40464, 42192, 45522, 47466, 60696, 63288, 68283, 71199, 80928, 82333, 84384, 91044, 94932, 121392, 126576, 136566, 142398, 164666, 182088, 189864, 242784, 246999, 253152, 273132, 284796, 329332, 364176, 379728, 493998, 546264, 569592, 658664, 728352, 740997, 759456, 987996, 1092528, 1139184, 1317328, 1481994, 1975992, 2185056, 2222991, 2278368, 2634656, 2963988, 3951984, 4445982, 5927976, 6668973, 7903968, 8891964, 11855952, 13337946, 17783928, 20006919, 23711904, 26675892, 35567856, 40013838, 53351784, 71135712, 80027676, 106703568, 160055352, 213407136, 320110704, 640221408]

約数ペア:

[(1, 640221408), (2, 320110704), (3, 213407136), (4, 160055352), (6, 106703568), (8, 80027676), (9, 71135712), (12, 53351784), (16, 40013838), (18, 35567856), (24, 26675892), (27, 23711904), (32, 20006919), (36, 17783928), (48, 13337946), (54, 11855952), (72, 8891964), (81, 7903968), (96, 6668973), (108, 5927976), (144, 4445982), (162, 3951984), (216, 2963988), (243, 2634656), (281, 2278368), (288, 2222991), (293, 2185056), (324, 1975992), (432, 1481994), (486, 1317328), (562, 1139184), (586, 1092528), (648, 987996), (843, 759456), (864, 740997), (879, 728352), (972, 658664), (1124, 569592), (1172, 546264), (1296, 493998), (1686, 379728), (1758, 364176), (1944, 329332), (2248, 284796), (2344, 273132), (2529, 253152), (2592, 246999), (2637, 242784), (3372, 189864), (3516, 182088), (3888, 164666), (4496, 142398), (4688, 136566), (5058, 126576), (5274, 121392), (6744, 94932), (7032, 91044), (7587, 84384), (7776, 82333), (7911, 80928), (8992, 71199), (9376, 68283), (10116, 63288), (10548, 60696), (13488, 47466), (14064, 45522), (15174, 42192), (15822, 40464), (20232, 31644), (21096, 30348), (22761, 28128), (23733, 26976)]