21860332

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 43352064

約数和(自身を除く): 21491732

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 71, 124, 142, 191, 284, 382, 403, 764, 806, 923, 1612, 1846, 2201, 2483, 3692, 4402, 4966, 5921, 8804, 9932, 11842, 13561, 23684, 27122, 28613, 54244, 57226, 76973, 114452, 153946, 176293, 307892, 352586, 420391, 705172, 840782, 1681564, 5465083, 10930166, 21860332]

約数ペア:

[(1, 21860332), (2, 10930166), (4, 5465083), (13, 1681564), (26, 840782), (31, 705172), (52, 420391), (62, 352586), (71, 307892), (124, 176293), (142, 153946), (191, 114452), (284, 76973), (382, 57226), (403, 54244), (764, 28613), (806, 27122), (923, 23684), (1612, 13561), (1846, 11842), (2201, 9932), (2483, 8804), (3692, 5921), (4402, 4966)]