21542508

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{241}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 59195136

約数和(自身を除く): 37652628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 191, 234, 241, 382, 468, 482, 573, 723, 764, 964, 1146, 1446, 1719, 2169, 2292, 2483, 2892, 3133, 3438, 4338, 4966, 6266, 6876, 7449, 8676, 9399, 9932, 12532, 14898, 18798, 22347, 28197, 29796, 37596, 44694, 46031, 56394, 89388, 92062, 112788, 138093, 184124, 276186, 414279, 552372, 598403, 828558, 1196806, 1657116, 1795209, 2393612, 3590418, 5385627, 7180836, 10771254, 21542508]

約数ペア:

[(1, 21542508), (2, 10771254), (3, 7180836), (4, 5385627), (6, 3590418), (9, 2393612), (12, 1795209), (13, 1657116), (18, 1196806), (26, 828558), (36, 598403), (39, 552372), (52, 414279), (78, 276186), (117, 184124), (156, 138093), (191, 112788), (234, 92062), (241, 89388), (382, 56394), (468, 46031), (482, 44694), (573, 37596), (723, 29796), (764, 28197), (964, 22347), (1146, 18798), (1446, 14898), (1719, 12532), (2169, 9932), (2292, 9399), (2483, 8676), (2892, 7449), (3133, 6876), (3438, 6266), (4338, 4966)]