21167005820

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{191}}^2\times {\mathrm{433}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 45456330192

約数和(自身を除く): 24289324372

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 191, 268, 335, 382, 433, 670, 764, 866, 955, 1340, 1732, 1910, 2165, 3820, 4330, 8660, 12797, 25594, 29011, 36481, 51188, 58022, 63985, 72962, 82703, 116044, 127970, 145055, 145924, 165406, 182405, 255940, 290110, 330812, 364810, 413515, 580220, 729620, 827030, 1654060, 2444227, 4888454, 5541101, 9776908, 11082202, 12221135, 15796273, 22164404, 24442270, 27705505, 31592546, 48884540, 55411010, 63185092, 78981365, 110822020, 157962730, 315925460, 1058350291, 2116700582, 4233401164, 5291751455, 10583502910, 21167005820]

約数ペア:

[(1, 21167005820), (2, 10583502910), (4, 5291751455), (5, 4233401164), (10, 2116700582), (20, 1058350291), (67, 315925460), (134, 157962730), (191, 110822020), (268, 78981365), (335, 63185092), (382, 55411010), (433, 48884540), (670, 31592546), (764, 27705505), (866, 24442270), (955, 22164404), (1340, 15796273), (1732, 12221135), (1910, 11082202), (2165, 9776908), (3820, 5541101), (4330, 4888454), (8660, 2444227), (12797, 1654060), (25594, 827030), (29011, 729620), (36481, 580220), (51188, 413515), (58022, 364810), (63985, 330812), (72962, 290110), (82703, 255940), (116044, 182405), (127970, 165406), (145055, 145924)]