21631480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2447}}^1$

素因数の和:2488

約数の個数: 64

約数和(自身を含む): 55520640

約数和(自身を除く): 33889160

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1768, 2210, 2447, 4420, 4894, 8840, 9788, 12235, 19576, 24470, 31811, 41599, 48940, 63622, 83198, 97880, 127244, 159055, 166396, 207995, 254488, 318110, 332792, 415990, 540787, 636220, 831980, 1081574, 1272440, 1663960, 2163148, 2703935, 4326296, 5407870, 10815740, 21631480]

約数ペア:

[(1, 21631480), (2, 10815740), (4, 5407870), (5, 4326296), (8, 2703935), (10, 2163148), (13, 1663960), (17, 1272440), (20, 1081574), (26, 831980), (34, 636220), (40, 540787), (52, 415990), (65, 332792), (68, 318110), (85, 254488), (104, 207995), (130, 166396), (136, 159055), (170, 127244), (221, 97880), (260, 83198), (340, 63622), (442, 48940), (520, 41599), (680, 31811), (884, 24470), (1105, 19576), (1768, 12235), (2210, 9788), (2447, 8840), (4420, 4894)]