400000084

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:421

約数の個数: 96

約数和(自身を含む): 853493760

約数和(自身を除く): 453493676

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 44, 46, 71, 76, 92, 142, 209, 253, 284, 293, 418, 437, 506, 586, 781, 836, 874, 1012, 1172, 1349, 1562, 1633, 1748, 2698, 3124, 3223, 3266, 4807, 5396, 5567, 6446, 6532, 6739, 9614, 11134, 12892, 13478, 14839, 17963, 19228, 20803, 22268, 26956, 29678, 31027, 35926, 41606, 59356, 61237, 62054, 71852, 74129, 83212, 122474, 124108, 128041, 148258, 228833, 244948, 256082, 296516, 341297, 395257, 457666, 478469, 512164, 682594, 790514, 915332, 956938, 1365188, 1408451, 1581028, 1913876, 2816902, 4347827, 5263159, 5633804, 8695654, 9090911, 10526318, 17391308, 18181822, 21052636, 36363644, 100000021, 200000042, 400000084]

約数ペア:

[(1, 400000084), (2, 200000042), (4, 100000021), (11, 36363644), (19, 21052636), (22, 18181822), (23, 17391308), (38, 10526318), (44, 9090911), (46, 8695654), (71, 5633804), (76, 5263159), (92, 4347827), (142, 2816902), (209, 1913876), (253, 1581028), (284, 1408451), (293, 1365188), (418, 956938), (437, 915332), (506, 790514), (586, 682594), (781, 512164), (836, 478469), (874, 457666), (1012, 395257), (1172, 341297), (1349, 296516), (1562, 256082), (1633, 244948), (1748, 228833), (2698, 148258), (3124, 128041), (3223, 124108), (3266, 122474), (4807, 83212), (5396, 74129), (5567, 71852), (6446, 62054), (6532, 61237), (6739, 59356), (9614, 41606), (11134, 35926), (12892, 31027), (13478, 29678), (14839, 26956), (17963, 22268), (19228, 20803)]