78357860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2161}}^1$

素因数の和:2221

約数の個数: 72

約数和(自身を含む): 196681464

約数和(自身を除く): 118323604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 490, 518, 740, 980, 1036, 1295, 1813, 2161, 2590, 3626, 4322, 5180, 7252, 8644, 9065, 10805, 15127, 18130, 21610, 30254, 36260, 43220, 60508, 75635, 79957, 105889, 151270, 159914, 211778, 302540, 319828, 399785, 423556, 529445, 559699, 799570, 1058890, 1119398, 1599140, 2117780, 2238796, 2798495, 3917893, 5596990, 7835786, 11193980, 15671572, 19589465, 39178930, 78357860]

約数ペア:

[(1, 78357860), (2, 39178930), (4, 19589465), (5, 15671572), (7, 11193980), (10, 7835786), (14, 5596990), (20, 3917893), (28, 2798495), (35, 2238796), (37, 2117780), (49, 1599140), (70, 1119398), (74, 1058890), (98, 799570), (140, 559699), (148, 529445), (185, 423556), (196, 399785), (245, 319828), (259, 302540), (370, 211778), (490, 159914), (518, 151270), (740, 105889), (980, 79957), (1036, 75635), (1295, 60508), (1813, 43220), (2161, 36260), (2590, 30254), (3626, 21610), (4322, 18130), (5180, 15127), (7252, 10805), (8644, 9065)]