638017786

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{2221}}^1$

素因数の和:2335

約数の個数: 48

約数和(自身を含む): 1178762112

約数和(自身を除く): 540744326

約数列:

[1, 2, 7, 14, 17, 34, 71, 119, 142, 238, 289, 497, 578, 994, 1207, 2023, 2221, 2414, 4046, 4442, 8449, 15547, 16898, 20519, 31094, 37757, 41038, 75514, 143633, 157691, 264299, 287266, 315382, 528598, 641869, 1103837, 1283738, 2207674, 2680747, 4493083, 5361494, 8986166, 18765229, 37530458, 45572699, 91145398, 319008893, 638017786]

約数ペア:

[(1, 638017786), (2, 319008893), (7, 91145398), (14, 45572699), (17, 37530458), (34, 18765229), (71, 8986166), (119, 5361494), (142, 4493083), (238, 2680747), (289, 2207674), (497, 1283738), (578, 1103837), (994, 641869), (1207, 528598), (2023, 315382), (2221, 287266), (2414, 264299), (4046, 157691), (4442, 143633), (8449, 75514), (15547, 41038), (16898, 37757), (20519, 31094)]