20295940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4999}}^1$

素因数の和:5044

約数の個数: 48

約数和(自身を含む): 50400000

約数和(自身を除く): 30104060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4999, 9998, 19996, 24995, 34993, 49990, 69986, 99980, 139972, 144971, 174965, 289942, 349930, 579884, 699860, 724855, 1014797, 1449710, 2029594, 2899420, 4059188, 5073985, 10147970, 20295940]

約数ペア:

[(1, 20295940), (2, 10147970), (4, 5073985), (5, 4059188), (7, 2899420), (10, 2029594), (14, 1449710), (20, 1014797), (28, 724855), (29, 699860), (35, 579884), (58, 349930), (70, 289942), (116, 174965), (140, 144971), (145, 139972), (203, 99980), (290, 69986), (406, 49990), (580, 34993), (812, 24995), (1015, 19996), (2030, 9998), (4060, 4999)]