21305550

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:322

約数の個数: 96

約数和(自身を含む): 61281792

約数和(自身を除く): 39976242

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 103, 105, 150, 175, 197, 206, 210, 309, 350, 394, 515, 525, 591, 618, 721, 985, 1030, 1050, 1182, 1379, 1442, 1545, 1970, 2163, 2575, 2758, 2955, 3090, 3605, 4137, 4326, 4925, 5150, 5910, 6895, 7210, 7725, 8274, 9850, 10815, 13790, 14775, 15450, 18025, 20291, 20685, 21630, 29550, 34475, 36050, 40582, 41370, 54075, 60873, 68950, 101455, 103425, 108150, 121746, 142037, 202910, 206850, 284074, 304365, 426111, 507275, 608730, 710185, 852222, 1014550, 1420370, 1521825, 2130555, 3043650, 3550925, 4261110, 7101850, 10652775, 21305550]

約数ペア:

[(1, 21305550), (2, 10652775), (3, 7101850), (5, 4261110), (6, 3550925), (7, 3043650), (10, 2130555), (14, 1521825), (15, 1420370), (21, 1014550), (25, 852222), (30, 710185), (35, 608730), (42, 507275), (50, 426111), (70, 304365), (75, 284074), (103, 206850), (105, 202910), (150, 142037), (175, 121746), (197, 108150), (206, 103425), (210, 101455), (309, 68950), (350, 60873), (394, 54075), (515, 41370), (525, 40582), (591, 36050), (618, 34475), (721, 29550), (985, 21630), (1030, 20685), (1050, 20291), (1182, 18025), (1379, 15450), (1442, 14775), (1545, 13790), (1970, 10815), (2163, 9850), (2575, 8274), (2758, 7725), (2955, 7210), (3090, 6895), (3605, 5910), (4137, 5150), (4326, 4925)]