20819512

素因数分解:

$2^3\times 7^2\times {\mathrm{173}}^1\times {\mathrm{307}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 45821160

約数和(自身を除く): 25001648

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 173, 196, 307, 346, 392, 614, 692, 1211, 1228, 1384, 2149, 2422, 2456, 4298, 4844, 8477, 8596, 9688, 15043, 16954, 17192, 30086, 33908, 53111, 60172, 67816, 106222, 120344, 212444, 371777, 424888, 743554, 1487108, 2602439, 2974216, 5204878, 10409756, 20819512]

約数ペア:

[(1, 20819512), (2, 10409756), (4, 5204878), (7, 2974216), (8, 2602439), (14, 1487108), (28, 743554), (49, 424888), (56, 371777), (98, 212444), (173, 120344), (196, 106222), (307, 67816), (346, 60172), (392, 53111), (614, 33908), (692, 30086), (1211, 17192), (1228, 16954), (1384, 15043), (2149, 9688), (2422, 8596), (2456, 8477), (4298, 4844)]