82819940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{20399}}^1$

素因数の和:20444

約数の個数: 48

約数和(自身を含む): 205632000

約数和(自身を除く): 122812060

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, 20399, 40798, 81596, 101995, 142793, 203990, 285586, 407980, 571172, 591571, 713965, 1183142, 1427930, 2366284, 2855860, 2957855, 4140997, 5915710, 8281994, 11831420, 16563988, 20704985, 41409970, 82819940]

約数ペア:

[(1, 82819940), (2, 41409970), (4, 20704985), (5, 16563988), (7, 11831420), (10, 8281994), (14, 5915710), (20, 4140997), (28, 2957855), (29, 2855860), (35, 2366284), (58, 1427930), (70, 1183142), (116, 713965), (140, 591571), (145, 571172), (203, 407980), (290, 285586), (406, 203990), (580, 142793), (812, 101995), (1015, 81596), (2030, 40798), (4060, 20399)]