20008974800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{8191}}^1$

素因数の和:8437

約数の個数: 120

約数和(自身を含む): 49880236032

約数和(自身を除く): 29871261232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 197, 200, 248, 310, 394, 400, 496, 620, 775, 788, 985, 1240, 1550, 1576, 1970, 2480, 3100, 3152, 3940, 4925, 6107, 6200, 7880, 8191, 9850, 12214, 12400, 15760, 16382, 19700, 24428, 30535, 32764, 39400, 40955, 48856, 61070, 65528, 78800, 81910, 97712, 122140, 131056, 152675, 163820, 204775, 244280, 253921, 305350, 327640, 409550, 488560, 507842, 610700, 655280, 819100, 1015684, 1221400, 1269605, 1613627, 1638200, 2031368, 2442800, 2539210, 3227254, 3276400, 4062736, 5078420, 6348025, 6454508, 8068135, 10156840, 12696050, 12909016, 16136270, 20313680, 25392100, 25818032, 32272540, 40340675, 50022437, 50784200, 64545080, 80681350, 100044874, 101568400, 129090160, 161362700, 200089748, 250112185, 322725400, 400179496, 500224370, 645450800, 800358992, 1000448740, 1250560925, 2000897480, 2501121850, 4001794960, 5002243700, 10004487400, 20008974800]

約数ペア:

[(1, 20008974800), (2, 10004487400), (4, 5002243700), (5, 4001794960), (8, 2501121850), (10, 2000897480), (16, 1250560925), (20, 1000448740), (25, 800358992), (31, 645450800), (40, 500224370), (50, 400179496), (62, 322725400), (80, 250112185), (100, 200089748), (124, 161362700), (155, 129090160), (197, 101568400), (200, 100044874), (248, 80681350), (310, 64545080), (394, 50784200), (400, 50022437), (496, 40340675), (620, 32272540), (775, 25818032), (788, 25392100), (985, 20313680), (1240, 16136270), (1550, 12909016), (1576, 12696050), (1970, 10156840), (2480, 8068135), (3100, 6454508), (3152, 6348025), (3940, 5078420), (4925, 4062736), (6107, 3276400), (6200, 3227254), (7880, 2539210), (8191, 2442800), (9850, 2031368), (12214, 1638200), (12400, 1613627), (15760, 1269605), (16382, 1221400), (19700, 1015684), (24428, 819100), (30535, 655280), (32764, 610700), (39400, 507842), (40955, 488560), (48856, 409550), (61070, 327640), (65528, 305350), (78800, 253921), (81910, 244280), (97712, 204775), (122140, 163820), (131056, 152675)]