18402488

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 39984000

約数和(自身を除く): 21581512

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 67, 76, 104, 134, 139, 152, 247, 268, 278, 494, 536, 556, 871, 988, 1112, 1273, 1742, 1807, 1976, 2546, 2641, 3484, 3614, 5092, 5282, 6968, 7228, 9313, 10184, 10564, 14456, 16549, 18626, 21128, 33098, 34333, 37252, 66196, 68666, 74504, 121069, 132392, 137332, 176947, 242138, 274664, 353894, 484276, 707788, 968552, 1415576, 2300311, 4600622, 9201244, 18402488]

約数ペア:

[(1, 18402488), (2, 9201244), (4, 4600622), (8, 2300311), (13, 1415576), (19, 968552), (26, 707788), (38, 484276), (52, 353894), (67, 274664), (76, 242138), (104, 176947), (134, 137332), (139, 132392), (152, 121069), (247, 74504), (268, 68666), (278, 66196), (494, 37252), (536, 34333), (556, 33098), (871, 21128), (988, 18626), (1112, 16549), (1273, 14456), (1742, 10564), (1807, 10184), (1976, 9313), (2546, 7228), (2641, 6968), (3484, 5282), (3614, 5092)]