8217920

素因数分解:

$2^6\times 5^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:499

約数の個数: 56

約数和(自身を含む): 19936968

約数和(自身を除く): 11719048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 160, 244, 305, 320, 421, 488, 610, 842, 976, 1220, 1684, 1952, 2105, 2440, 3368, 3904, 4210, 4880, 6736, 8420, 9760, 13472, 16840, 19520, 25681, 26944, 33680, 51362, 67360, 102724, 128405, 134720, 205448, 256810, 410896, 513620, 821792, 1027240, 1643584, 2054480, 4108960, 8217920]

約数ペア:

[(1, 8217920), (2, 4108960), (4, 2054480), (5, 1643584), (8, 1027240), (10, 821792), (16, 513620), (20, 410896), (32, 256810), (40, 205448), (61, 134720), (64, 128405), (80, 102724), (122, 67360), (160, 51362), (244, 33680), (305, 26944), (320, 25681), (421, 19520), (488, 16840), (610, 13472), (842, 9760), (976, 8420), (1220, 6736), (1684, 4880), (1952, 4210), (2105, 3904), (2440, 3368)]