128508640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1993}}^1$

素因数の和:2052

約数の個数: 96

約数和(自身を含む): 337671936

約数和(自身を除く): 209163296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 208, 248, 260, 310, 403, 416, 496, 520, 620, 806, 992, 1040, 1240, 1612, 1993, 2015, 2080, 2480, 3224, 3986, 4030, 4960, 6448, 7972, 8060, 9965, 12896, 15944, 16120, 19930, 25909, 31888, 32240, 39860, 51818, 61783, 63776, 64480, 79720, 103636, 123566, 129545, 159440, 207272, 247132, 259090, 308915, 318880, 414544, 494264, 518180, 617830, 803179, 829088, 988528, 1036360, 1235660, 1606358, 1977056, 2072720, 2471320, 3212716, 4015895, 4145440, 4942640, 6425432, 8031790, 9885280, 12850864, 16063580, 25701728, 32127160, 64254320, 128508640]

約数ペア:

[(1, 128508640), (2, 64254320), (4, 32127160), (5, 25701728), (8, 16063580), (10, 12850864), (13, 9885280), (16, 8031790), (20, 6425432), (26, 4942640), (31, 4145440), (32, 4015895), (40, 3212716), (52, 2471320), (62, 2072720), (65, 1977056), (80, 1606358), (104, 1235660), (124, 1036360), (130, 988528), (155, 829088), (160, 803179), (208, 617830), (248, 518180), (260, 494264), (310, 414544), (403, 318880), (416, 308915), (496, 259090), (520, 247132), (620, 207272), (806, 159440), (992, 129545), (1040, 123566), (1240, 103636), (1612, 79720), (1993, 64480), (2015, 63776), (2080, 61783), (2480, 51818), (3224, 39860), (3986, 32240), (4030, 31888), (4960, 25909), (6448, 19930), (7972, 16120), (8060, 15944), (9965, 12896)]