21328788

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2909}}^1$

素因数の和:2976

約数の個数: 48

約数和(自身を含む): 54754560

約数和(自身を除く): 33425772

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 47, 52, 78, 94, 141, 156, 188, 282, 564, 611, 1222, 1833, 2444, 2909, 3666, 5818, 7332, 8727, 11636, 17454, 34908, 37817, 75634, 113451, 136723, 151268, 226902, 273446, 410169, 453804, 546892, 820338, 1640676, 1777399, 3554798, 5332197, 7109596, 10664394, 21328788]

約数ペア:

[(1, 21328788), (2, 10664394), (3, 7109596), (4, 5332197), (6, 3554798), (12, 1777399), (13, 1640676), (26, 820338), (39, 546892), (47, 453804), (52, 410169), (78, 273446), (94, 226902), (141, 151268), (156, 136723), (188, 113451), (282, 75634), (564, 37817), (611, 34908), (1222, 17454), (1833, 11636), (2444, 8727), (2909, 7332), (3666, 5818)]