78576680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21587}}^1$

素因数の和:21618

約数の個数: 64

約数和(自身を含む): 217607040

約数和(自身を除く): 139030360

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21587, 43174, 86348, 107935, 151109, 172696, 215870, 280631, 302218, 431740, 561262, 604436, 755545, 863480, 1122524, 1208872, 1403155, 1511090, 1964417, 2245048, 2806310, 3022180, 3928834, 5612620, 6044360, 7857668, 9822085, 11225240, 15715336, 19644170, 39288340, 78576680]

約数ペア:

[(1, 78576680), (2, 39288340), (4, 19644170), (5, 15715336), (7, 11225240), (8, 9822085), (10, 7857668), (13, 6044360), (14, 5612620), (20, 3928834), (26, 3022180), (28, 2806310), (35, 2245048), (40, 1964417), (52, 1511090), (56, 1403155), (65, 1208872), (70, 1122524), (91, 863480), (104, 755545), (130, 604436), (140, 561262), (182, 431740), (260, 302218), (280, 280631), (364, 215870), (455, 172696), (520, 151109), (728, 107935), (910, 86348), (1820, 43174), (3640, 21587)]