21007890

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{2683}}^1$

素因数の和:2728

約数の個数: 64

約数和(自身を含む): 57974400

約数和(自身を除く): 36966510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 29, 30, 45, 54, 58, 87, 90, 135, 145, 174, 261, 270, 290, 435, 522, 783, 870, 1305, 1566, 2610, 2683, 3915, 5366, 7830, 8049, 13415, 16098, 24147, 26830, 40245, 48294, 72441, 77807, 80490, 120735, 144882, 155614, 233421, 241470, 362205, 389035, 466842, 700263, 724410, 778070, 1167105, 1400526, 2100789, 2334210, 3501315, 4201578, 7002630, 10503945, 21007890]

約数ペア:

[(1, 21007890), (2, 10503945), (3, 7002630), (5, 4201578), (6, 3501315), (9, 2334210), (10, 2100789), (15, 1400526), (18, 1167105), (27, 778070), (29, 724410), (30, 700263), (45, 466842), (54, 389035), (58, 362205), (87, 241470), (90, 233421), (135, 155614), (145, 144882), (174, 120735), (261, 80490), (270, 77807), (290, 72441), (435, 48294), (522, 40245), (783, 26830), (870, 24147), (1305, 16098), (1566, 13415), (2610, 8049), (2683, 7830), (3915, 5366)]