20436728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 43666560

約数和(自身を除く): 23229832

約数列:

[1, 2, 4, 8, 13, 26, 37, 47, 52, 74, 94, 104, 113, 148, 188, 226, 296, 376, 452, 481, 611, 904, 962, 1222, 1469, 1739, 1924, 2444, 2938, 3478, 3848, 4181, 4888, 5311, 5876, 6956, 8362, 10622, 11752, 13912, 16724, 21244, 22607, 33448, 42488, 45214, 54353, 69043, 90428, 108706, 138086, 180856, 196507, 217412, 276172, 393014, 434824, 552344, 786028, 1572056, 2554591, 5109182, 10218364, 20436728]

約数ペア:

[(1, 20436728), (2, 10218364), (4, 5109182), (8, 2554591), (13, 1572056), (26, 786028), (37, 552344), (47, 434824), (52, 393014), (74, 276172), (94, 217412), (104, 196507), (113, 180856), (148, 138086), (188, 108706), (226, 90428), (296, 69043), (376, 54353), (452, 45214), (481, 42488), (611, 33448), (904, 22607), (962, 21244), (1222, 16724), (1469, 13912), (1739, 11752), (1924, 10622), (2444, 8362), (2938, 6956), (3478, 5876), (3848, 5311), (4181, 4888)]