515090420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{63907}}^1$

素因数の和:63960

約数の個数: 48

約数和(自身を含む): 1202492928

約数和(自身を除く): 687402508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 63907, 127814, 255628, 319535, 639070, 830791, 1278140, 1661582, 1981117, 3323164, 3962234, 4153955, 7924468, 8307910, 9905585, 16615820, 19811170, 25754521, 39622340, 51509042, 103018084, 128772605, 257545210, 515090420]

約数ペア:

[(1, 515090420), (2, 257545210), (4, 128772605), (5, 103018084), (10, 51509042), (13, 39622340), (20, 25754521), (26, 19811170), (31, 16615820), (52, 9905585), (62, 8307910), (65, 7924468), (124, 4153955), (130, 3962234), (155, 3323164), (260, 1981117), (310, 1661582), (403, 1278140), (620, 830791), (806, 639070), (1612, 319535), (2015, 255628), (4030, 127814), (8060, 63907)]