19634420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 46146744

約数和(自身を除く): 26512324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 157, 169, 185, 260, 314, 338, 370, 481, 628, 676, 740, 785, 845, 962, 1570, 1690, 1924, 2041, 2405, 3140, 3380, 4082, 4810, 5809, 6253, 8164, 9620, 10205, 11618, 12506, 20410, 23236, 25012, 26533, 29045, 31265, 40820, 53066, 58090, 62530, 75517, 106132, 116180, 125060, 132665, 151034, 265330, 302068, 377585, 530660, 755170, 981721, 1510340, 1963442, 3926884, 4908605, 9817210, 19634420]

約数ペア:

[(1, 19634420), (2, 9817210), (4, 4908605), (5, 3926884), (10, 1963442), (13, 1510340), (20, 981721), (26, 755170), (37, 530660), (52, 377585), (65, 302068), (74, 265330), (130, 151034), (148, 132665), (157, 125060), (169, 116180), (185, 106132), (260, 75517), (314, 62530), (338, 58090), (370, 53066), (481, 40820), (628, 31265), (676, 29045), (740, 26533), (785, 25012), (845, 23236), (962, 20410), (1570, 12506), (1690, 11618), (1924, 10205), (2041, 9620), (2405, 8164), (3140, 6253), (3380, 5809), (4082, 4810)]