71987220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{911}}^1$

素因数の和:1365

約数の個数: 72

約数和(自身を含む): 219098880

約数和(自身を除く): 147111660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 911, 1317, 1756, 1822, 2195, 2634, 2733, 3644, 3951, 4390, 4555, 5268, 5466, 6585, 7902, 8199, 8780, 9110, 10932, 13170, 13665, 15804, 16398, 18220, 19755, 26340, 27330, 32796, 39510, 40995, 54660, 79020, 81990, 163980, 399929, 799858, 1199787, 1599716, 1999645, 2399574, 3599361, 3999290, 4799148, 5998935, 7198722, 7998580, 11997870, 14397444, 17996805, 23995740, 35993610, 71987220]

約数ペア:

[(1, 71987220), (2, 35993610), (3, 23995740), (4, 17996805), (5, 14397444), (6, 11997870), (9, 7998580), (10, 7198722), (12, 5998935), (15, 4799148), (18, 3999290), (20, 3599361), (30, 2399574), (36, 1999645), (45, 1599716), (60, 1199787), (90, 799858), (180, 399929), (439, 163980), (878, 81990), (911, 79020), (1317, 54660), (1756, 40995), (1822, 39510), (2195, 32796), (2634, 27330), (2733, 26340), (3644, 19755), (3951, 18220), (4390, 16398), (4555, 15804), (5268, 13665), (5466, 13170), (6585, 10932), (7902, 9110), (8199, 8780)]