90238520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1193}}^1$

素因数の和:1296

約数の個数: 64

約数和(自身を含む): 213200640

約数和(自身を除く): 122962120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 61, 62, 122, 124, 155, 244, 248, 305, 310, 488, 610, 620, 1193, 1220, 1240, 1891, 2386, 2440, 3782, 4772, 5965, 7564, 9455, 9544, 11930, 15128, 18910, 23860, 36983, 37820, 47720, 72773, 73966, 75640, 145546, 147932, 184915, 291092, 295864, 363865, 369830, 582184, 727730, 739660, 1455460, 1479320, 2255963, 2910920, 4511926, 9023852, 11279815, 18047704, 22559630, 45119260, 90238520]

約数ペア:

[(1, 90238520), (2, 45119260), (4, 22559630), (5, 18047704), (8, 11279815), (10, 9023852), (20, 4511926), (31, 2910920), (40, 2255963), (61, 1479320), (62, 1455460), (122, 739660), (124, 727730), (155, 582184), (244, 369830), (248, 363865), (305, 295864), (310, 291092), (488, 184915), (610, 147932), (620, 145546), (1193, 75640), (1220, 73966), (1240, 72773), (1891, 47720), (2386, 37820), (2440, 36983), (3782, 23860), (4772, 18910), (5965, 15128), (7564, 11930), (9455, 9544)]