21143928

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^3\times {\mathrm{401}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 57405600

約数和(自身を除く): 36261672

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 169, 312, 338, 401, 507, 676, 802, 1014, 1203, 1352, 1604, 2028, 2197, 2406, 3208, 4056, 4394, 4812, 5213, 6591, 8788, 9624, 10426, 13182, 15639, 17576, 20852, 26364, 31278, 41704, 52728, 62556, 67769, 125112, 135538, 203307, 271076, 406614, 542152, 813228, 880997, 1626456, 1761994, 2642991, 3523988, 5285982, 7047976, 10571964, 21143928]

約数ペア:

[(1, 21143928), (2, 10571964), (3, 7047976), (4, 5285982), (6, 3523988), (8, 2642991), (12, 1761994), (13, 1626456), (24, 880997), (26, 813228), (39, 542152), (52, 406614), (78, 271076), (104, 203307), (156, 135538), (169, 125112), (312, 67769), (338, 62556), (401, 52728), (507, 41704), (676, 31278), (802, 26364), (1014, 20852), (1203, 17576), (1352, 15639), (1604, 13182), (2028, 10426), (2197, 9624), (2406, 8788), (3208, 6591), (4056, 5213), (4394, 4812)]