91438840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2072

約数の個数: 64

約数和(自身を含む): 218223360

約数和(自身を除く): 126784520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 620, 740, 1147, 1240, 1480, 1993, 2294, 3986, 4588, 5735, 7972, 9176, 9965, 11470, 15944, 19930, 22940, 39860, 45880, 61783, 73741, 79720, 123566, 147482, 247132, 294964, 308915, 368705, 494264, 589928, 617830, 737410, 1235660, 1474820, 2285971, 2471320, 2949640, 4571942, 9143884, 11429855, 18287768, 22859710, 45719420, 91438840]

約数ペア:

[(1, 91438840), (2, 45719420), (4, 22859710), (5, 18287768), (8, 11429855), (10, 9143884), (20, 4571942), (31, 2949640), (37, 2471320), (40, 2285971), (62, 1474820), (74, 1235660), (124, 737410), (148, 617830), (155, 589928), (185, 494264), (248, 368705), (296, 308915), (310, 294964), (370, 247132), (620, 147482), (740, 123566), (1147, 79720), (1240, 73741), (1480, 61783), (1993, 45880), (2294, 39860), (3986, 22940), (4588, 19930), (5735, 15944), (7972, 11470), (9176, 9965)]