261978444

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{379}}^1$

素因数の和:620

約数の個数: 144

約数和(自身を含む): 821067520

約数和(自身を除く): 559089076

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 211, 234, 252, 273, 364, 379, 422, 468, 546, 633, 758, 819, 844, 1092, 1137, 1266, 1477, 1516, 1638, 1899, 2274, 2532, 2653, 2743, 2954, 3276, 3411, 3798, 4431, 4548, 4927, 5306, 5486, 5908, 6822, 7596, 7959, 8229, 8862, 9854, 10612, 10972, 13293, 13644, 14781, 15918, 16458, 17724, 19201, 19708, 23877, 24687, 26586, 29562, 31836, 32916, 34489, 38402, 44343, 47754, 49374, 53172, 57603, 59124, 68978, 76804, 79969, 88686, 95508, 98748, 103467, 115206, 137956, 159938, 172809, 177372, 206934, 230412, 239907, 310401, 319876, 345618, 413868, 479814, 559783, 620802, 691236, 719721, 959628, 1039597, 1119566, 1241604, 1439442, 1679349, 2079194, 2239132, 2878884, 3118791, 3358698, 4158388, 5038047, 6237582, 6717396, 7277179, 9356373, 10076094, 12475164, 14554358, 18712746, 20152188, 21831537, 29108716, 37425492, 43663074, 65494611, 87326148, 130989222, 261978444]

約数ペア:

[(1, 261978444), (2, 130989222), (3, 87326148), (4, 65494611), (6, 43663074), (7, 37425492), (9, 29108716), (12, 21831537), (13, 20152188), (14, 18712746), (18, 14554358), (21, 12475164), (26, 10076094), (28, 9356373), (36, 7277179), (39, 6717396), (42, 6237582), (52, 5038047), (63, 4158388), (78, 3358698), (84, 3118791), (91, 2878884), (117, 2239132), (126, 2079194), (156, 1679349), (182, 1439442), (211, 1241604), (234, 1119566), (252, 1039597), (273, 959628), (364, 719721), (379, 691236), (422, 620802), (468, 559783), (546, 479814), (633, 413868), (758, 345618), (819, 319876), (844, 310401), (1092, 239907), (1137, 230412), (1266, 206934), (1477, 177372), (1516, 172809), (1638, 159938), (1899, 137956), (2274, 115206), (2532, 103467), (2653, 98748), (2743, 95508), (2954, 88686), (3276, 79969), (3411, 76804), (3798, 68978), (4431, 59124), (4548, 57603), (4927, 53172), (5306, 49374), (5486, 47754), (5908, 44343), (6822, 38402), (7596, 34489), (7959, 32916), (8229, 31836), (8862, 29562), (9854, 26586), (10612, 24687), (10972, 23877), (13293, 19708), (13644, 19201), (14781, 17724), (15918, 16458)]