18900016

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{613}}^1$

素因数の和:709

約数の個数: 40

約数和(自身を含む): 38372544

約数和(自身を除く): 19472528

約数列:

[1, 2, 4, 8, 16, 41, 47, 82, 94, 164, 188, 328, 376, 613, 656, 752, 1226, 1927, 2452, 3854, 4904, 7708, 9808, 15416, 25133, 28811, 30832, 50266, 57622, 100532, 115244, 201064, 230488, 402128, 460976, 1181251, 2362502, 4725004, 9450008, 18900016]

約数ペア:

[(1, 18900016), (2, 9450008), (4, 4725004), (8, 2362502), (16, 1181251), (41, 460976), (47, 402128), (82, 230488), (94, 201064), (164, 115244), (188, 100532), (328, 57622), (376, 50266), (613, 30832), (656, 28811), (752, 25133), (1226, 15416), (1927, 9808), (2452, 7708), (3854, 4904)]