21006648

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{7481}}^1$

素因数の和:7509

約数の個数: 64

約数和(自身を含む): 62848800

約数和(自身を除く): 41842152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 104, 108, 117, 156, 216, 234, 312, 351, 468, 702, 936, 1404, 2808, 7481, 14962, 22443, 29924, 44886, 59848, 67329, 89772, 97253, 134658, 179544, 194506, 201987, 269316, 291759, 389012, 403974, 538632, 583518, 778024, 807948, 875277, 1167036, 1615896, 1750554, 2334072, 2625831, 3501108, 5251662, 7002216, 10503324, 21006648]

約数ペア:

[(1, 21006648), (2, 10503324), (3, 7002216), (4, 5251662), (6, 3501108), (8, 2625831), (9, 2334072), (12, 1750554), (13, 1615896), (18, 1167036), (24, 875277), (26, 807948), (27, 778024), (36, 583518), (39, 538632), (52, 403974), (54, 389012), (72, 291759), (78, 269316), (104, 201987), (108, 194506), (117, 179544), (156, 134658), (216, 97253), (234, 89772), (312, 67329), (351, 59848), (468, 44886), (702, 29924), (936, 22443), (1404, 14962), (2808, 7481)]