21973420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:191

約数の個数: 96

約数和(自身を含む): 55996416

約数和(自身を除く): 34022996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 61, 62, 70, 83, 122, 124, 140, 155, 166, 217, 244, 305, 310, 332, 415, 427, 434, 581, 610, 620, 830, 854, 868, 1085, 1162, 1220, 1660, 1708, 1891, 2135, 2170, 2324, 2573, 2905, 3782, 4270, 4340, 5063, 5146, 5810, 7564, 8540, 9455, 10126, 10292, 11620, 12865, 13237, 18011, 18910, 20252, 25315, 25730, 26474, 35441, 36022, 37820, 50630, 51460, 52948, 66185, 70882, 72044, 90055, 101260, 132370, 141764, 156953, 177205, 180110, 264740, 313906, 354410, 360220, 627812, 708820, 784765, 1098671, 1569530, 2197342, 3139060, 4394684, 5493355, 10986710, 21973420]

約数ペア:

[(1, 21973420), (2, 10986710), (4, 5493355), (5, 4394684), (7, 3139060), (10, 2197342), (14, 1569530), (20, 1098671), (28, 784765), (31, 708820), (35, 627812), (61, 360220), (62, 354410), (70, 313906), (83, 264740), (122, 180110), (124, 177205), (140, 156953), (155, 141764), (166, 132370), (217, 101260), (244, 90055), (305, 72044), (310, 70882), (332, 66185), (415, 52948), (427, 51460), (434, 50630), (581, 37820), (610, 36022), (620, 35441), (830, 26474), (854, 25730), (868, 25315), (1085, 20252), (1162, 18910), (1220, 18011), (1660, 13237), (1708, 12865), (1891, 11620), (2135, 10292), (2170, 10126), (2324, 9455), (2573, 8540), (2905, 7564), (3782, 5810), (4270, 5146), (4340, 5063)]