20686572080

素因数分解:

$2^4\times 5^1\times {\mathrm{6653}}^1\times {\mathrm{38867}}^1$

素因数の和:45533

約数の個数: 40

約数和(自身を含む): 48104746992

約数和(自身を除く): 27418174912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6653, 13306, 26612, 33265, 38867, 53224, 66530, 77734, 106448, 133060, 155468, 194335, 266120, 310936, 388670, 532240, 621872, 777340, 1554680, 3109360, 258582151, 517164302, 1034328604, 1292910755, 2068657208, 2585821510, 4137314416, 5171643020, 10343286040, 20686572080]

約数ペア:

[(1, 20686572080), (2, 10343286040), (4, 5171643020), (5, 4137314416), (8, 2585821510), (10, 2068657208), (16, 1292910755), (20, 1034328604), (40, 517164302), (80, 258582151), (6653, 3109360), (13306, 1554680), (26612, 777340), (33265, 621872), (38867, 532240), (53224, 388670), (66530, 310936), (77734, 266120), (106448, 194335), (133060, 155468)]