201538840

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 462873600

約数和(自身を除く): 261334760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 127, 194, 254, 388, 409, 485, 508, 635, 776, 818, 970, 1016, 1270, 1636, 1940, 2045, 2540, 3272, 3880, 4090, 5080, 8180, 12319, 16360, 24638, 39673, 49276, 51943, 61595, 79346, 98552, 103886, 123190, 158692, 198365, 207772, 246380, 259715, 317384, 396730, 415544, 492760, 519430, 793460, 1038860, 1586920, 2077720, 5038471, 10076942, 20153884, 25192355, 40307768, 50384710, 100769420, 201538840]

約数ペア:

[(1, 201538840), (2, 100769420), (4, 50384710), (5, 40307768), (8, 25192355), (10, 20153884), (20, 10076942), (40, 5038471), (97, 2077720), (127, 1586920), (194, 1038860), (254, 793460), (388, 519430), (409, 492760), (485, 415544), (508, 396730), (635, 317384), (776, 259715), (818, 246380), (970, 207772), (1016, 198365), (1270, 158692), (1636, 123190), (1940, 103886), (2045, 98552), (2540, 79346), (3272, 61595), (3880, 51943), (4090, 49276), (5080, 39673), (8180, 24638), (12319, 16360)]