20123550

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{227}}^1$

素因数の和:442

約数の個数: 72

約数和(自身を含む): 54579096

約数和(自身を除く): 34455546

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 75, 90, 150, 197, 225, 227, 394, 450, 454, 591, 681, 985, 1135, 1182, 1362, 1773, 1970, 2043, 2270, 2955, 3405, 3546, 4086, 4925, 5675, 5910, 6810, 8865, 9850, 10215, 11350, 14775, 17025, 17730, 20430, 29550, 34050, 44325, 44719, 51075, 88650, 89438, 102150, 134157, 223595, 268314, 402471, 447190, 670785, 804942, 1117975, 1341570, 2012355, 2235950, 3353925, 4024710, 6707850, 10061775, 20123550]

約数ペア:

[(1, 20123550), (2, 10061775), (3, 6707850), (5, 4024710), (6, 3353925), (9, 2235950), (10, 2012355), (15, 1341570), (18, 1117975), (25, 804942), (30, 670785), (45, 447190), (50, 402471), (75, 268314), (90, 223595), (150, 134157), (197, 102150), (225, 89438), (227, 88650), (394, 51075), (450, 44719), (454, 44325), (591, 34050), (681, 29550), (985, 20430), (1135, 17730), (1182, 17025), (1362, 14775), (1773, 11350), (1970, 10215), (2043, 9850), (2270, 8865), (2955, 6810), (3405, 5910), (3546, 5675), (4086, 4925)]