21533560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31667}}^1$

素因数の和:31695

約数の個数: 32

約数和(自身を含む): 51302160

約数和(自身を除く): 29768600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31667, 63334, 126668, 158335, 253336, 316670, 538339, 633340, 1076678, 1266680, 2153356, 2691695, 4306712, 5383390, 10766780, 21533560]

約数ペア:

[(1, 21533560), (2, 10766780), (4, 5383390), (5, 4306712), (8, 2691695), (10, 2153356), (17, 1266680), (20, 1076678), (34, 633340), (40, 538339), (68, 316670), (85, 253336), (136, 158335), (170, 126668), (340, 63334), (680, 31667)]