28078180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1367}}^1$

素因数の和:1468

約数の個数: 48

約数和(自身を含む): 64350720

約数和(自身を除く): 36272540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1367, 1580, 2054, 2734, 4108, 5135, 5468, 6835, 10270, 13670, 17771, 20540, 27340, 35542, 71084, 88855, 107993, 177710, 215986, 355420, 431972, 539965, 1079930, 1403909, 2159860, 2807818, 5615636, 7019545, 14039090, 28078180]

約数ペア:

[(1, 28078180), (2, 14039090), (4, 7019545), (5, 5615636), (10, 2807818), (13, 2159860), (20, 1403909), (26, 1079930), (52, 539965), (65, 431972), (79, 355420), (130, 215986), (158, 177710), (260, 107993), (316, 88855), (395, 71084), (790, 35542), (1027, 27340), (1367, 20540), (1580, 17771), (2054, 13670), (2734, 10270), (4108, 6835), (5135, 5468)]