21512718

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{307}}^1$

素因数の和:561

約数の個数: 48

約数和(自身を含む): 49729680

約数和(自身を除く): 28216962

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 229, 306, 307, 458, 614, 687, 921, 1374, 1842, 2061, 2763, 3893, 4122, 5219, 5526, 7786, 10438, 11679, 15657, 23358, 31314, 35037, 46971, 70074, 70303, 93942, 140606, 210909, 421818, 632727, 1195151, 1265454, 2390302, 3585453, 7170906, 10756359, 21512718]

約数ペア:

[(1, 21512718), (2, 10756359), (3, 7170906), (6, 3585453), (9, 2390302), (17, 1265454), (18, 1195151), (34, 632727), (51, 421818), (102, 210909), (153, 140606), (229, 93942), (306, 70303), (307, 70074), (458, 46971), (614, 35037), (687, 31314), (921, 23358), (1374, 15657), (1842, 11679), (2061, 10438), (2763, 7786), (3893, 5526), (4122, 5219)]