77920780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3457}}^1$

素因数の和:3503

約数の個数: 72

約数和(自身を含む): 198682848

約数和(自身を除く): 120762068

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 3457, 4508, 5635, 6914, 11270, 13828, 17285, 22540, 24199, 34570, 48398, 69140, 79511, 96796, 120995, 159022, 169393, 241990, 318044, 338786, 397555, 483980, 556577, 677572, 795110, 846965, 1113154, 1590220, 1693930, 2226308, 2782885, 3387860, 3896039, 5565770, 7792078, 11131540, 15584156, 19480195, 38960390, 77920780]

約数ペア:

[(1, 77920780), (2, 38960390), (4, 19480195), (5, 15584156), (7, 11131540), (10, 7792078), (14, 5565770), (20, 3896039), (23, 3387860), (28, 2782885), (35, 2226308), (46, 1693930), (49, 1590220), (70, 1113154), (92, 846965), (98, 795110), (115, 677572), (140, 556577), (161, 483980), (196, 397555), (230, 338786), (245, 318044), (322, 241990), (460, 169393), (490, 159022), (644, 120995), (805, 96796), (980, 79511), (1127, 69140), (1610, 48398), (2254, 34570), (3220, 24199), (3457, 22540), (4508, 17285), (5635, 13828), (6914, 11270)]