21000663490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1\times {\mathrm{1697}}^1$

素因数の和:2179

約数の個数: 64

約数和(自身を含む): 39537590400

約数和(自身を除く): 18536926910

約数列:

[1, 2, 5, 10, 29, 58, 139, 145, 278, 290, 307, 614, 695, 1390, 1535, 1697, 3070, 3394, 4031, 8062, 8485, 8903, 16970, 17806, 20155, 40310, 42673, 44515, 49213, 85346, 89030, 98426, 213365, 235883, 246065, 426730, 471766, 492130, 520979, 1041958, 1179415, 1237517, 2358830, 2475034, 2604895, 5209790, 6187585, 6840607, 12375170, 13681214, 15108391, 30216782, 34203035, 68406070, 72416081, 75541955, 144832162, 151083910, 362080405, 724160810, 2100066349, 4200132698, 10500331745, 21000663490]

約数ペア:

[(1, 21000663490), (2, 10500331745), (5, 4200132698), (10, 2100066349), (29, 724160810), (58, 362080405), (139, 151083910), (145, 144832162), (278, 75541955), (290, 72416081), (307, 68406070), (614, 34203035), (695, 30216782), (1390, 15108391), (1535, 13681214), (1697, 12375170), (3070, 6840607), (3394, 6187585), (4031, 5209790), (8062, 2604895), (8485, 2475034), (8903, 2358830), (16970, 1237517), (17806, 1179415), (20155, 1041958), (40310, 520979), (42673, 492130), (44515, 471766), (49213, 426730), (85346, 246065), (89030, 235883), (98426, 213365)]