18396820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{409}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 41947920

約数和(自身を除く): 23551100

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 173, 260, 346, 409, 692, 818, 865, 1636, 1730, 2045, 2249, 3460, 4090, 4498, 5317, 8180, 8996, 10634, 11245, 21268, 22490, 26585, 44980, 53170, 70757, 106340, 141514, 283028, 353785, 707570, 919841, 1415140, 1839682, 3679364, 4599205, 9198410, 18396820]

約数ペア:

[(1, 18396820), (2, 9198410), (4, 4599205), (5, 3679364), (10, 1839682), (13, 1415140), (20, 919841), (26, 707570), (52, 353785), (65, 283028), (130, 141514), (173, 106340), (260, 70757), (346, 53170), (409, 44980), (692, 26585), (818, 22490), (865, 21268), (1636, 11245), (1730, 10634), (2045, 8996), (2249, 8180), (3460, 5317), (4090, 4498)]