20768805

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2699}}^1$

素因数の和:2735

約数の個数: 40

約数和(自身を含む): 39204000

約数和(自身を除く): 18435195

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2699, 7695, 8097, 13495, 24291, 40485, 51281, 72873, 121455, 153843, 218619, 256405, 364365, 461529, 769215, 1093095, 1384587, 2307645, 4153761, 6922935, 20768805]

約数ペア:

[(1, 20768805), (3, 6922935), (5, 4153761), (9, 2307645), (15, 1384587), (19, 1093095), (27, 769215), (45, 461529), (57, 364365), (81, 256405), (95, 218619), (135, 153843), (171, 121455), (285, 72873), (405, 51281), (513, 40485), (855, 24291), (1539, 13495), (2565, 8097), (2699, 7695)]