20300100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 59246208

約数和(自身を除く): 38946108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 157, 300, 314, 431, 471, 628, 785, 862, 942, 1293, 1570, 1724, 1884, 2155, 2355, 2586, 3140, 3925, 4310, 4710, 5172, 6465, 7850, 8620, 9420, 10775, 11775, 12930, 15700, 21550, 23550, 25860, 32325, 43100, 47100, 64650, 67667, 129300, 135334, 203001, 270668, 338335, 406002, 676670, 812004, 1015005, 1353340, 1691675, 2030010, 3383350, 4060020, 5075025, 6766700, 10150050, 20300100]

約数ペア:

[(1, 20300100), (2, 10150050), (3, 6766700), (4, 5075025), (5, 4060020), (6, 3383350), (10, 2030010), (12, 1691675), (15, 1353340), (20, 1015005), (25, 812004), (30, 676670), (50, 406002), (60, 338335), (75, 270668), (100, 203001), (150, 135334), (157, 129300), (300, 67667), (314, 64650), (431, 47100), (471, 43100), (628, 32325), (785, 25860), (862, 23550), (942, 21550), (1293, 15700), (1570, 12930), (1724, 11775), (1884, 10775), (2155, 9420), (2355, 8620), (2586, 7850), (3140, 6465), (3925, 5172), (4310, 4710)]