20556390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 30868890

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 61, 94, 122, 141, 183, 235, 239, 282, 305, 366, 470, 478, 610, 705, 717, 915, 1195, 1410, 1434, 1830, 2390, 2867, 3585, 5734, 7170, 8601, 11233, 14335, 14579, 17202, 22466, 28670, 29158, 33699, 43005, 43737, 56165, 67398, 72895, 86010, 87474, 112330, 145790, 168495, 218685, 336990, 437370, 685213, 1370426, 2055639, 3426065, 4111278, 6852130, 10278195, 20556390]

約数ペア:

[(1, 20556390), (2, 10278195), (3, 6852130), (5, 4111278), (6, 3426065), (10, 2055639), (15, 1370426), (30, 685213), (47, 437370), (61, 336990), (94, 218685), (122, 168495), (141, 145790), (183, 112330), (235, 87474), (239, 86010), (282, 72895), (305, 67398), (366, 56165), (470, 43737), (478, 43005), (610, 33699), (705, 29158), (717, 28670), (915, 22466), (1195, 17202), (1410, 14579), (1434, 14335), (1830, 11233), (2390, 8601), (2867, 7170), (3585, 5734)]