21261708

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:455

約数の個数: 72

約数和(自身を含む): 58430736

約数和(自身を除く): 37169028

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 181, 234, 251, 362, 468, 502, 543, 724, 753, 1004, 1086, 1506, 1629, 2172, 2259, 2353, 3012, 3258, 3263, 4518, 4706, 6516, 6526, 7059, 9036, 9412, 9789, 13052, 14118, 19578, 21177, 28236, 29367, 39156, 42354, 45431, 58734, 84708, 90862, 117468, 136293, 181724, 272586, 408879, 545172, 590603, 817758, 1181206, 1635516, 1771809, 2362412, 3543618, 5315427, 7087236, 10630854, 21261708]

約数ペア:

[(1, 21261708), (2, 10630854), (3, 7087236), (4, 5315427), (6, 3543618), (9, 2362412), (12, 1771809), (13, 1635516), (18, 1181206), (26, 817758), (36, 590603), (39, 545172), (52, 408879), (78, 272586), (117, 181724), (156, 136293), (181, 117468), (234, 90862), (251, 84708), (362, 58734), (468, 45431), (502, 42354), (543, 39156), (724, 29367), (753, 28236), (1004, 21177), (1086, 19578), (1506, 14118), (1629, 13052), (2172, 9789), (2259, 9412), (2353, 9036), (3012, 7059), (3258, 6526), (3263, 6516), (4518, 4706)]