28423000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:725

約数の個数: 64

約数和(自身を含む): 68159520

約数和(自身を除く): 39736520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 500, 661, 860, 1000, 1075, 1322, 1720, 2150, 2644, 3305, 4300, 5288, 5375, 6610, 8600, 10750, 13220, 16525, 21500, 26440, 28423, 33050, 43000, 56846, 66100, 82625, 113692, 132200, 142115, 165250, 227384, 284230, 330500, 568460, 661000, 710575, 1136920, 1421150, 2842300, 3552875, 5684600, 7105750, 14211500, 28423000]

約数ペア:

[(1, 28423000), (2, 14211500), (4, 7105750), (5, 5684600), (8, 3552875), (10, 2842300), (20, 1421150), (25, 1136920), (40, 710575), (43, 661000), (50, 568460), (86, 330500), (100, 284230), (125, 227384), (172, 165250), (200, 142115), (215, 132200), (250, 113692), (344, 82625), (430, 66100), (500, 56846), (661, 43000), (860, 33050), (1000, 28423), (1075, 26440), (1322, 21500), (1720, 16525), (2150, 13220), (2644, 10750), (3305, 8600), (4300, 6610), (5288, 5375)]