155664640

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3923}}^1$

素因数の和:3975

約数の個数: 72

約数和(自身を含む): 384991488

約数和(自身を除く): 229326848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3923, 3968, 4960, 7846, 7936, 9920, 15692, 19615, 19840, 31384, 39230, 39680, 62768, 78460, 121613, 125536, 156920, 243226, 251072, 313840, 486452, 502144, 608065, 627680, 972904, 1004288, 1216130, 1255360, 1945808, 2432260, 2510720, 3891616, 4864520, 5021440, 7783232, 9729040, 15566464, 19458080, 31132928, 38916160, 77832320, 155664640]

約数ペア:

[(1, 155664640), (2, 77832320), (4, 38916160), (5, 31132928), (8, 19458080), (10, 15566464), (16, 9729040), (20, 7783232), (31, 5021440), (32, 4864520), (40, 3891616), (62, 2510720), (64, 2432260), (80, 1945808), (124, 1255360), (128, 1216130), (155, 1004288), (160, 972904), (248, 627680), (256, 608065), (310, 502144), (320, 486452), (496, 313840), (620, 251072), (640, 243226), (992, 156920), (1240, 125536), (1280, 121613), (1984, 78460), (2480, 62768), (3923, 39680), (3968, 39230), (4960, 31384), (7846, 19840), (7936, 19615), (9920, 15692)]