989833340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{6653}}^1$

素因数の和:6878

約数の個数: 48

約数和(自身を含む): 2139607008

約数和(自身を除く): 1149773668

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 173, 215, 346, 430, 692, 860, 865, 1730, 3460, 6653, 7439, 13306, 14878, 26612, 29756, 33265, 37195, 66530, 74390, 133060, 148780, 286079, 572158, 1144316, 1150969, 1430395, 2301938, 2860790, 4603876, 5721580, 5754845, 11509690, 23019380, 49491667, 98983334, 197966668, 247458335, 494916670, 989833340]

約数ペア:

[(1, 989833340), (2, 494916670), (4, 247458335), (5, 197966668), (10, 98983334), (20, 49491667), (43, 23019380), (86, 11509690), (172, 5754845), (173, 5721580), (215, 4603876), (346, 2860790), (430, 2301938), (692, 1430395), (860, 1150969), (865, 1144316), (1730, 572158), (3460, 286079), (6653, 148780), (7439, 133060), (13306, 74390), (14878, 66530), (26612, 37195), (29756, 33265)]