521738120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{4027}}^1$

素因数の和:4158

約数の個数: 64

約数和(自身を含む): 1218067200

約数和(自身を除く): 696329080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 79, 82, 158, 164, 205, 316, 328, 395, 410, 632, 790, 820, 1580, 1640, 3160, 3239, 4027, 6478, 8054, 12956, 16108, 16195, 20135, 25912, 32216, 32390, 40270, 64780, 80540, 129560, 161080, 165107, 318133, 330214, 636266, 660428, 825535, 1272532, 1320856, 1590665, 1651070, 2545064, 3181330, 3302140, 6362660, 6604280, 12725320, 13043453, 26086906, 52173812, 65217265, 104347624, 130434530, 260869060, 521738120]

約数ペア:

[(1, 521738120), (2, 260869060), (4, 130434530), (5, 104347624), (8, 65217265), (10, 52173812), (20, 26086906), (40, 13043453), (41, 12725320), (79, 6604280), (82, 6362660), (158, 3302140), (164, 3181330), (205, 2545064), (316, 1651070), (328, 1590665), (395, 1320856), (410, 1272532), (632, 825535), (790, 660428), (820, 636266), (1580, 330214), (1640, 318133), (3160, 165107), (3239, 161080), (4027, 129560), (6478, 80540), (8054, 64780), (12956, 40270), (16108, 32390), (16195, 32216), (20135, 25912)]