18810870

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 49109760

約数和(自身を除く): 30298890

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 139, 195, 278, 347, 390, 417, 694, 695, 834, 1041, 1390, 1735, 1807, 2082, 2085, 3470, 3614, 4170, 4511, 5205, 5421, 9022, 9035, 10410, 10842, 13533, 18070, 22555, 27066, 27105, 45110, 48233, 54210, 67665, 96466, 135330, 144699, 241165, 289398, 482330, 627029, 723495, 1254058, 1446990, 1881087, 3135145, 3762174, 6270290, 9405435, 18810870]

約数ペア:

[(1, 18810870), (2, 9405435), (3, 6270290), (5, 3762174), (6, 3135145), (10, 1881087), (13, 1446990), (15, 1254058), (26, 723495), (30, 627029), (39, 482330), (65, 289398), (78, 241165), (130, 144699), (139, 135330), (195, 96466), (278, 67665), (347, 54210), (390, 48233), (417, 45110), (694, 27105), (695, 27066), (834, 22555), (1041, 18070), (1390, 13533), (1735, 10842), (1807, 10410), (2082, 9035), (2085, 9022), (3470, 5421), (3614, 5205), (4170, 4511)]