217823360

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{10979}}^1$

素因数の和:11029

約数の個数: 64

約数和(自身を含む): 537580800

約数和(自身を除く): 319757440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 10979, 19840, 21958, 43916, 54895, 87832, 109790, 175664, 219580, 340349, 351328, 439160, 680698, 702656, 878320, 1361396, 1405312, 1701745, 1756640, 2722792, 3403490, 3513280, 5445584, 6806980, 7026560, 10891168, 13613960, 21782336, 27227920, 43564672, 54455840, 108911680, 217823360]

約数ペア:

[(1, 217823360), (2, 108911680), (4, 54455840), (5, 43564672), (8, 27227920), (10, 21782336), (16, 13613960), (20, 10891168), (31, 7026560), (32, 6806980), (40, 5445584), (62, 3513280), (64, 3403490), (80, 2722792), (124, 1756640), (128, 1701745), (155, 1405312), (160, 1361396), (248, 878320), (310, 702656), (320, 680698), (496, 439160), (620, 351328), (640, 340349), (992, 219580), (1240, 175664), (1984, 109790), (2480, 87832), (3968, 54895), (4960, 43916), (9920, 21958), (10979, 19840)]