19975696

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{701}}^1$

素因数の和:859

約数の個数: 40

約数和(自身を含む): 42044184

約数和(自身を除く): 22068488

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 548, 701, 1096, 1402, 1781, 2192, 2804, 3562, 5608, 7124, 9113, 11216, 14248, 18226, 28496, 36452, 72904, 96037, 145808, 192074, 384148, 768296, 1248481, 1536592, 2496962, 4993924, 9987848, 19975696]

約数ペア:

[(1, 19975696), (2, 9987848), (4, 4993924), (8, 2496962), (13, 1536592), (16, 1248481), (26, 768296), (52, 384148), (104, 192074), (137, 145808), (208, 96037), (274, 72904), (548, 36452), (701, 28496), (1096, 18226), (1402, 14248), (1781, 11216), (2192, 9113), (2804, 7124), (3562, 5608)]