28728760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{367}}^1$

素因数の和:500

約数の個数: 64

約数和(自身を含む): 68889600

約数和(自身を除く): 40160840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 103, 152, 190, 206, 367, 380, 412, 515, 734, 760, 824, 1030, 1468, 1835, 1957, 2060, 2936, 3670, 3914, 4120, 6973, 7340, 7828, 9785, 13946, 14680, 15656, 19570, 27892, 34865, 37801, 39140, 55784, 69730, 75602, 78280, 139460, 151204, 189005, 278920, 302408, 378010, 718219, 756020, 1436438, 1512040, 2872876, 3591095, 5745752, 7182190, 14364380, 28728760]

約数ペア:

[(1, 28728760), (2, 14364380), (4, 7182190), (5, 5745752), (8, 3591095), (10, 2872876), (19, 1512040), (20, 1436438), (38, 756020), (40, 718219), (76, 378010), (95, 302408), (103, 278920), (152, 189005), (190, 151204), (206, 139460), (367, 78280), (380, 75602), (412, 69730), (515, 55784), (734, 39140), (760, 37801), (824, 34865), (1030, 27892), (1468, 19570), (1835, 15656), (1957, 14680), (2060, 13946), (2936, 9785), (3670, 7828), (3914, 7340), (4120, 6973)]