21101340

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2081}}^1$

素因数の和:2119

約数の個数: 72

約数和(自身を含む): 64009008

約数和(自身を除く): 42907668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 2028, 2081, 2535, 3380, 4162, 5070, 6243, 8324, 10140, 10405, 12486, 20810, 24972, 27053, 31215, 41620, 54106, 62430, 81159, 108212, 124860, 135265, 162318, 270530, 324636, 351689, 405795, 541060, 703378, 811590, 1055067, 1406756, 1623180, 1758445, 2110134, 3516890, 4220268, 5275335, 7033780, 10550670, 21101340]

約数ペア:

[(1, 21101340), (2, 10550670), (3, 7033780), (4, 5275335), (5, 4220268), (6, 3516890), (10, 2110134), (12, 1758445), (13, 1623180), (15, 1406756), (20, 1055067), (26, 811590), (30, 703378), (39, 541060), (52, 405795), (60, 351689), (65, 324636), (78, 270530), (130, 162318), (156, 135265), (169, 124860), (195, 108212), (260, 81159), (338, 62430), (390, 54106), (507, 41620), (676, 31215), (780, 27053), (845, 24972), (1014, 20810), (1690, 12486), (2028, 10405), (2081, 10140), (2535, 8324), (3380, 6243), (4162, 5070)]