18997875

素因数分解:

$3^3\times 5^3\times {\mathrm{13}}^1\times {\mathrm{433}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 37914240

約数和(自身を除く): 18916365

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 125, 135, 195, 225, 325, 351, 375, 433, 585, 675, 975, 1125, 1299, 1625, 1755, 2165, 2925, 3375, 3897, 4875, 5629, 6495, 8775, 10825, 11691, 14625, 16887, 19485, 28145, 32475, 43875, 50661, 54125, 58455, 84435, 97425, 140725, 151983, 162375, 253305, 292275, 422175, 487125, 703625, 759915, 1266525, 1461375, 2110875, 3799575, 6332625, 18997875]

約数ペア:

[(1, 18997875), (3, 6332625), (5, 3799575), (9, 2110875), (13, 1461375), (15, 1266525), (25, 759915), (27, 703625), (39, 487125), (45, 422175), (65, 292275), (75, 253305), (117, 162375), (125, 151983), (135, 140725), (195, 97425), (225, 84435), (325, 58455), (351, 54125), (375, 50661), (433, 43875), (585, 32475), (675, 28145), (975, 19485), (1125, 16887), (1299, 14625), (1625, 11691), (1755, 10825), (2165, 8775), (2925, 6495), (3375, 5629), (3897, 4875)]