21995106

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 52690176

約数和(自身を除く): 30695070

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 53, 82, 106, 123, 159, 241, 246, 287, 318, 371, 482, 574, 723, 742, 861, 1113, 1446, 1687, 1722, 2173, 2226, 3374, 4346, 5061, 6519, 9881, 10122, 12773, 13038, 15211, 19762, 25546, 29643, 30422, 38319, 45633, 59286, 69167, 76638, 89411, 91266, 138334, 178822, 207501, 268233, 415002, 523693, 536466, 1047386, 1571079, 3142158, 3665851, 7331702, 10997553, 21995106]

約数ペア:

[(1, 21995106), (2, 10997553), (3, 7331702), (6, 3665851), (7, 3142158), (14, 1571079), (21, 1047386), (41, 536466), (42, 523693), (53, 415002), (82, 268233), (106, 207501), (123, 178822), (159, 138334), (241, 91266), (246, 89411), (287, 76638), (318, 69167), (371, 59286), (482, 45633), (574, 38319), (723, 30422), (742, 29643), (861, 25546), (1113, 19762), (1446, 15211), (1687, 13038), (1722, 12773), (2173, 10122), (2226, 9881), (3374, 6519), (4346, 5061)]