18893420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1483}}^1$

素因数の和:1519

約数の個数: 72

約数和(自身を含む): 49737744

約数和(自身を除く): 30844324

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1483, 1820, 2548, 2966, 3185, 5932, 6370, 7415, 10381, 12740, 14830, 19279, 20762, 29660, 38558, 41524, 51905, 72667, 77116, 96395, 103810, 134953, 145334, 192790, 207620, 269906, 290668, 363335, 385580, 539812, 674765, 726670, 944671, 1349530, 1453340, 1889342, 2699060, 3778684, 4723355, 9446710, 18893420]

約数ペア:

[(1, 18893420), (2, 9446710), (4, 4723355), (5, 3778684), (7, 2699060), (10, 1889342), (13, 1453340), (14, 1349530), (20, 944671), (26, 726670), (28, 674765), (35, 539812), (49, 385580), (52, 363335), (65, 290668), (70, 269906), (91, 207620), (98, 192790), (130, 145334), (140, 134953), (182, 103810), (196, 96395), (245, 77116), (260, 72667), (364, 51905), (455, 41524), (490, 38558), (637, 29660), (910, 20762), (980, 19279), (1274, 14830), (1483, 12740), (1820, 10381), (2548, 7415), (2966, 6370), (3185, 5932)]