21981375

素因数分解:

$3^4\times 5^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1$

素因数の和:207

約数の個数: 80

約数和(自身を含む): 44396352

約数和(自身を除く): 22414977

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 81, 117, 125, 135, 167, 195, 225, 325, 351, 375, 405, 501, 585, 675, 835, 975, 1053, 1125, 1503, 1625, 1755, 2025, 2171, 2505, 2925, 3375, 4175, 4509, 4875, 5265, 6513, 7515, 8775, 10125, 10855, 12525, 13527, 14625, 19539, 20875, 22545, 26325, 32565, 37575, 43875, 54275, 58617, 62625, 67635, 97695, 112725, 131625, 162825, 175851, 187875, 271375, 293085, 338175, 488475, 563625, 814125, 879255, 1465425, 1690875, 2442375, 4396275, 7327125, 21981375]

約数ペア:

[(1, 21981375), (3, 7327125), (5, 4396275), (9, 2442375), (13, 1690875), (15, 1465425), (25, 879255), (27, 814125), (39, 563625), (45, 488475), (65, 338175), (75, 293085), (81, 271375), (117, 187875), (125, 175851), (135, 162825), (167, 131625), (195, 112725), (225, 97695), (325, 67635), (351, 62625), (375, 58617), (405, 54275), (501, 43875), (585, 37575), (675, 32565), (835, 26325), (975, 22545), (1053, 20875), (1125, 19539), (1503, 14625), (1625, 13527), (1755, 12525), (2025, 10855), (2171, 10125), (2505, 8775), (2925, 7515), (3375, 6513), (4175, 5265), (4509, 4875)]