205105912

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2011}}^1$

素因数の和:2108

約数の個数: 64

約数和(自身を含む): 449078400

約数和(自身を除く): 243972488

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 61, 76, 88, 122, 152, 209, 244, 418, 488, 671, 836, 1159, 1342, 1672, 2011, 2318, 2684, 4022, 4636, 5368, 8044, 9272, 12749, 16088, 22121, 25498, 38209, 44242, 50996, 76418, 88484, 101992, 122671, 152836, 176968, 245342, 305672, 420299, 490684, 840598, 981368, 1349381, 1681196, 2330749, 2698762, 3362392, 4661498, 5397524, 9322996, 10795048, 18645992, 25638239, 51276478, 102552956, 205105912]

約数ペア:

[(1, 205105912), (2, 102552956), (4, 51276478), (8, 25638239), (11, 18645992), (19, 10795048), (22, 9322996), (38, 5397524), (44, 4661498), (61, 3362392), (76, 2698762), (88, 2330749), (122, 1681196), (152, 1349381), (209, 981368), (244, 840598), (418, 490684), (488, 420299), (671, 305672), (836, 245342), (1159, 176968), (1342, 152836), (1672, 122671), (2011, 101992), (2318, 88484), (2684, 76418), (4022, 50996), (4636, 44242), (5368, 38209), (8044, 25498), (9272, 22121), (12749, 16088)]