18993654

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:162

約数の個数: 72

約数和(自身を含む): 45171360

約数和(自身を除く): 26177706

約数列:

[1, 2, 3, 6, 9, 18, 19, 37, 38, 57, 74, 79, 111, 114, 158, 171, 222, 237, 333, 342, 361, 474, 666, 703, 711, 722, 1083, 1406, 1422, 1501, 2109, 2166, 2923, 3002, 3249, 4218, 4503, 5846, 6327, 6498, 8769, 9006, 12654, 13357, 13509, 17538, 26307, 26714, 27018, 28519, 40071, 52614, 55537, 57038, 80142, 85557, 111074, 120213, 166611, 171114, 240426, 256671, 333222, 499833, 513342, 999666, 1055203, 2110406, 3165609, 6331218, 9496827, 18993654]

約数ペア:

[(1, 18993654), (2, 9496827), (3, 6331218), (6, 3165609), (9, 2110406), (18, 1055203), (19, 999666), (37, 513342), (38, 499833), (57, 333222), (74, 256671), (79, 240426), (111, 171114), (114, 166611), (158, 120213), (171, 111074), (222, 85557), (237, 80142), (333, 57038), (342, 55537), (361, 52614), (474, 40071), (666, 28519), (703, 27018), (711, 26714), (722, 26307), (1083, 17538), (1406, 13509), (1422, 13357), (1501, 12654), (2109, 9006), (2166, 8769), (2923, 6498), (3002, 6327), (3249, 5846), (4218, 4503)]