12780821980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{347}}^1\times {\mathrm{59407}}^1$

素因数の和:59794

約数の個数: 48

約数和(自身を含む): 27785834496

約数和(自身を除く): 15005012516

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 347, 620, 694, 1388, 1735, 3470, 6940, 10757, 21514, 43028, 53785, 59407, 107570, 118814, 215140, 237628, 297035, 594070, 1188140, 1841617, 3683234, 7366468, 9208085, 18416170, 20614229, 36832340, 41228458, 82456916, 103071145, 206142290, 412284580, 639041099, 1278082198, 2556164396, 3195205495, 6390410990, 12780821980]

約数ペア:

[(1, 12780821980), (2, 6390410990), (4, 3195205495), (5, 2556164396), (10, 1278082198), (20, 639041099), (31, 412284580), (62, 206142290), (124, 103071145), (155, 82456916), (310, 41228458), (347, 36832340), (620, 20614229), (694, 18416170), (1388, 9208085), (1735, 7366468), (3470, 3683234), (6940, 1841617), (10757, 1188140), (21514, 594070), (43028, 297035), (53785, 237628), (59407, 215140), (107570, 118814)]