398721620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:202

約数の個数: 144

約数和(自身を含む): 973885584

約数和(自身を除く): 575163964

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 61, 73, 74, 110, 121, 122, 146, 148, 185, 220, 242, 244, 292, 305, 365, 370, 407, 484, 605, 610, 671, 730, 740, 803, 814, 1210, 1220, 1342, 1460, 1606, 1628, 2035, 2257, 2420, 2684, 2701, 3212, 3355, 4015, 4070, 4453, 4477, 4514, 5402, 6710, 7381, 8030, 8140, 8833, 8906, 8954, 9028, 10804, 11285, 13420, 13505, 14762, 16060, 17666, 17812, 17908, 22265, 22385, 22570, 24827, 27010, 29524, 29711, 35332, 36905, 44165, 44530, 44770, 45140, 48983, 49654, 54020, 59422, 73810, 88330, 89060, 89540, 97966, 99308, 118844, 124135, 147620, 148555, 164761, 176660, 195932, 244915, 248270, 273097, 297110, 326821, 329522, 489830, 496540, 538813, 546194, 594220, 653642, 659044, 823805, 979660, 1077626, 1092388, 1307284, 1365485, 1634105, 1647610, 1812371, 2155252, 2694065, 2730970, 3268210, 3295220, 3624742, 5388130, 5461940, 6536420, 7249484, 9061855, 10776260, 18123710, 19936081, 36247420, 39872162, 79744324, 99680405, 199360810, 398721620]

約数ペア:

[(1, 398721620), (2, 199360810), (4, 99680405), (5, 79744324), (10, 39872162), (11, 36247420), (20, 19936081), (22, 18123710), (37, 10776260), (44, 9061855), (55, 7249484), (61, 6536420), (73, 5461940), (74, 5388130), (110, 3624742), (121, 3295220), (122, 3268210), (146, 2730970), (148, 2694065), (185, 2155252), (220, 1812371), (242, 1647610), (244, 1634105), (292, 1365485), (305, 1307284), (365, 1092388), (370, 1077626), (407, 979660), (484, 823805), (605, 659044), (610, 653642), (671, 594220), (730, 546194), (740, 538813), (803, 496540), (814, 489830), (1210, 329522), (1220, 326821), (1342, 297110), (1460, 273097), (1606, 248270), (1628, 244915), (2035, 195932), (2257, 176660), (2420, 164761), (2684, 148555), (2701, 147620), (3212, 124135), (3355, 118844), (4015, 99308), (4070, 97966), (4453, 89540), (4477, 89060), (4514, 88330), (5402, 73810), (6710, 59422), (7381, 54020), (8030, 49654), (8140, 48983), (8833, 45140), (8906, 44770), (8954, 44530), (9028, 44165), (10804, 36905), (11285, 35332), (13420, 29711), (13505, 29524), (14762, 27010), (16060, 24827), (17666, 22570), (17812, 22385), (17908, 22265)]