21306690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3881}}^1$

素因数の和:3955

約数の個数: 48

約数和(自身を含む): 56320056

約数和(自身を除く): 35013366

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 61, 90, 122, 183, 305, 366, 549, 610, 915, 1098, 1830, 2745, 3881, 5490, 7762, 11643, 19405, 23286, 34929, 38810, 58215, 69858, 116430, 174645, 236741, 349290, 473482, 710223, 1183705, 1420446, 2130669, 2367410, 3551115, 4261338, 7102230, 10653345, 21306690]

約数ペア:

[(1, 21306690), (2, 10653345), (3, 7102230), (5, 4261338), (6, 3551115), (9, 2367410), (10, 2130669), (15, 1420446), (18, 1183705), (30, 710223), (45, 473482), (61, 349290), (90, 236741), (122, 174645), (183, 116430), (305, 69858), (366, 58215), (549, 38810), (610, 34929), (915, 23286), (1098, 19405), (1830, 11643), (2745, 7762), (3881, 5490)]