28447900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 67565120

約数和(自身を除く): 39117220

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 79, 100, 130, 158, 260, 277, 316, 325, 395, 554, 650, 790, 1027, 1108, 1300, 1385, 1580, 1975, 2054, 2770, 3601, 3950, 4108, 5135, 5540, 6925, 7202, 7900, 10270, 13850, 14404, 18005, 20540, 21883, 25675, 27700, 36010, 43766, 51350, 72020, 87532, 90025, 102700, 109415, 180050, 218830, 284479, 360100, 437660, 547075, 568958, 1094150, 1137916, 1422395, 2188300, 2844790, 5689580, 7111975, 14223950, 28447900]

約数ペア:

[(1, 28447900), (2, 14223950), (4, 7111975), (5, 5689580), (10, 2844790), (13, 2188300), (20, 1422395), (25, 1137916), (26, 1094150), (50, 568958), (52, 547075), (65, 437660), (79, 360100), (100, 284479), (130, 218830), (158, 180050), (260, 109415), (277, 102700), (316, 90025), (325, 87532), (395, 72020), (554, 51350), (650, 43766), (790, 36010), (1027, 27700), (1108, 25675), (1300, 21883), (1385, 20540), (1580, 18005), (1975, 14404), (2054, 13850), (2770, 10270), (3601, 7900), (3950, 7202), (4108, 6925), (5135, 5540)]