64921760

素因数分解:

$2^5\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2039}}^1$

素因数の和:2253

約数の個数: 48

約数和(自身を含む): 154224000

約数和(自身を除く): 89302240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 199, 398, 796, 995, 1592, 1990, 2039, 3184, 3980, 4078, 6368, 7960, 8156, 10195, 15920, 16312, 20390, 31840, 32624, 40780, 65248, 81560, 163120, 326240, 405761, 811522, 1623044, 2028805, 3246088, 4057610, 6492176, 8115220, 12984352, 16230440, 32460880, 64921760]

約数ペア:

[(1, 64921760), (2, 32460880), (4, 16230440), (5, 12984352), (8, 8115220), (10, 6492176), (16, 4057610), (20, 3246088), (32, 2028805), (40, 1623044), (80, 811522), (160, 405761), (199, 326240), (398, 163120), (796, 81560), (995, 65248), (1592, 40780), (1990, 32624), (2039, 31840), (3184, 20390), (3980, 16312), (4078, 15920), (6368, 10195), (7960, 8156)]