21692840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3209}}^1$

素因数の和:3246

約数の個数: 48

約数和(自身を含む): 52868700

約数和(自身を除く): 31175860

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3209, 3380, 6418, 6760, 12836, 16045, 25672, 32090, 41717, 64180, 83434, 128360, 166868, 208585, 333736, 417170, 542321, 834340, 1084642, 1668680, 2169284, 2711605, 4338568, 5423210, 10846420, 21692840]

約数ペア:

[(1, 21692840), (2, 10846420), (4, 5423210), (5, 4338568), (8, 2711605), (10, 2169284), (13, 1668680), (20, 1084642), (26, 834340), (40, 542321), (52, 417170), (65, 333736), (104, 208585), (130, 166868), (169, 128360), (260, 83434), (338, 64180), (520, 41717), (676, 32090), (845, 25672), (1352, 16045), (1690, 12836), (3209, 6760), (3380, 6418)]