221988520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:395

約数の個数: 128

約数和(自身を含む): 568995840

約数和(自身を除く): 347007320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 47, 52, 62, 65, 94, 104, 124, 130, 155, 188, 235, 248, 260, 293, 310, 376, 403, 470, 520, 586, 611, 620, 806, 940, 1172, 1222, 1240, 1457, 1465, 1612, 1880, 2015, 2344, 2444, 2914, 2930, 3055, 3224, 3809, 4030, 4888, 5828, 5860, 6110, 7285, 7618, 8060, 9083, 11656, 11720, 12220, 13771, 14570, 15236, 16120, 18166, 18941, 19045, 24440, 27542, 29140, 30472, 36332, 37882, 38090, 45415, 55084, 58280, 68855, 72664, 75764, 76180, 90830, 94705, 110168, 118079, 137710, 151528, 152360, 179023, 181660, 189410, 236158, 275420, 358046, 363320, 378820, 426901, 472316, 550840, 590395, 716092, 757640, 853802, 895115, 944632, 1180790, 1432184, 1707604, 1790230, 2134505, 2361580, 3415208, 3580460, 4269010, 4723160, 5549713, 7160920, 8538020, 11099426, 17076040, 22198852, 27748565, 44397704, 55497130, 110994260, 221988520]

約数ペア:

[(1, 221988520), (2, 110994260), (4, 55497130), (5, 44397704), (8, 27748565), (10, 22198852), (13, 17076040), (20, 11099426), (26, 8538020), (31, 7160920), (40, 5549713), (47, 4723160), (52, 4269010), (62, 3580460), (65, 3415208), (94, 2361580), (104, 2134505), (124, 1790230), (130, 1707604), (155, 1432184), (188, 1180790), (235, 944632), (248, 895115), (260, 853802), (293, 757640), (310, 716092), (376, 590395), (403, 550840), (470, 472316), (520, 426901), (586, 378820), (611, 363320), (620, 358046), (806, 275420), (940, 236158), (1172, 189410), (1222, 181660), (1240, 179023), (1457, 152360), (1465, 151528), (1612, 137710), (1880, 118079), (2015, 110168), (2344, 94705), (2444, 90830), (2914, 76180), (2930, 75764), (3055, 72664), (3224, 68855), (3809, 58280), (4030, 55084), (4888, 45415), (5828, 38090), (5860, 37882), (6110, 36332), (7285, 30472), (7618, 29140), (8060, 27542), (9083, 24440), (11656, 19045), (11720, 18941), (12220, 18166), (13771, 16120), (14570, 15236)]