20395920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4999}}^1$

素因数の和:5032

約数の個数: 80

約数和(自身を含む): 66960000

約数和(自身を除く): 46564080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 4999, 9998, 14997, 19996, 24995, 29994, 39992, 49990, 59988, 74985, 79984, 84983, 99980, 119976, 149970, 169966, 199960, 239952, 254949, 299940, 339932, 399920, 424915, 509898, 599880, 679864, 849830, 1019796, 1199760, 1274745, 1359728, 1699660, 2039592, 2549490, 3399320, 4079184, 5098980, 6798640, 10197960, 20395920]

約数ペア:

[(1, 20395920), (2, 10197960), (3, 6798640), (4, 5098980), (5, 4079184), (6, 3399320), (8, 2549490), (10, 2039592), (12, 1699660), (15, 1359728), (16, 1274745), (17, 1199760), (20, 1019796), (24, 849830), (30, 679864), (34, 599880), (40, 509898), (48, 424915), (51, 399920), (60, 339932), (68, 299940), (80, 254949), (85, 239952), (102, 199960), (120, 169966), (136, 149970), (170, 119976), (204, 99980), (240, 84983), (255, 79984), (272, 74985), (340, 59988), (408, 49990), (510, 39992), (680, 29994), (816, 24995), (1020, 19996), (1360, 14997), (2040, 9998), (4080, 4999)]