19668704

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{787}}^1$

素因数の和:879

約数の個数: 48

約数和(自身を含む): 42892416

約数和(自身を除く): 23223712

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 71, 88, 142, 176, 284, 352, 568, 781, 787, 1136, 1562, 1574, 2272, 3124, 3148, 6248, 6296, 8657, 12496, 12592, 17314, 24992, 25184, 34628, 55877, 69256, 111754, 138512, 223508, 277024, 447016, 614647, 894032, 1229294, 1788064, 2458588, 4917176, 9834352, 19668704]

約数ペア:

[(1, 19668704), (2, 9834352), (4, 4917176), (8, 2458588), (11, 1788064), (16, 1229294), (22, 894032), (32, 614647), (44, 447016), (71, 277024), (88, 223508), (142, 138512), (176, 111754), (284, 69256), (352, 55877), (568, 34628), (781, 25184), (787, 24992), (1136, 17314), (1562, 12592), (1574, 12496), (2272, 8657), (3124, 6296), (3148, 6248)]