80628400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{103}}^2$

素因数の和:243

約数の個数: 90

約数和(自身を含む): 205903860

約数和(自身を除く): 125275460

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 103, 152, 190, 200, 206, 304, 380, 400, 412, 475, 515, 760, 824, 950, 1030, 1520, 1648, 1900, 1957, 2060, 2575, 3800, 3914, 4120, 5150, 7600, 7828, 8240, 9785, 10300, 10609, 15656, 19570, 20600, 21218, 31312, 39140, 41200, 42436, 48925, 53045, 78280, 84872, 97850, 106090, 156560, 169744, 195700, 201571, 212180, 265225, 391400, 403142, 424360, 530450, 782800, 806284, 848720, 1007855, 1060900, 1612568, 2015710, 2121800, 3225136, 4031420, 4243600, 5039275, 8062840, 10078550, 16125680, 20157100, 40314200, 80628400]

約数ペア:

[(1, 80628400), (2, 40314200), (4, 20157100), (5, 16125680), (8, 10078550), (10, 8062840), (16, 5039275), (19, 4243600), (20, 4031420), (25, 3225136), (38, 2121800), (40, 2015710), (50, 1612568), (76, 1060900), (80, 1007855), (95, 848720), (100, 806284), (103, 782800), (152, 530450), (190, 424360), (200, 403142), (206, 391400), (304, 265225), (380, 212180), (400, 201571), (412, 195700), (475, 169744), (515, 156560), (760, 106090), (824, 97850), (950, 84872), (1030, 78280), (1520, 53045), (1648, 48925), (1900, 42436), (1957, 41200), (2060, 39140), (2575, 31312), (3800, 21218), (3914, 20600), (4120, 19570), (5150, 15656), (7600, 10609), (7828, 10300), (8240, 9785)]