398371328

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1389

約数の個数: 80

約数和(自身を含む): 865539840

約数和(自身を除く): 467168512

約数列:

[1, 2, 4, 8, 16, 19, 31, 32, 38, 62, 64, 76, 124, 128, 152, 248, 256, 304, 496, 512, 589, 608, 992, 1178, 1216, 1321, 1984, 2356, 2432, 2642, 3968, 4712, 4864, 5284, 7936, 9424, 9728, 10568, 15872, 18848, 21136, 25099, 37696, 40951, 42272, 50198, 75392, 81902, 84544, 100396, 150784, 163804, 169088, 200792, 301568, 327608, 338176, 401584, 655216, 676352, 778069, 803168, 1310432, 1556138, 1606336, 2620864, 3112276, 3212672, 5241728, 6224552, 6425344, 10483456, 12449104, 12850688, 20966912, 24898208, 49796416, 99592832, 199185664, 398371328]

約数ペア:

[(1, 398371328), (2, 199185664), (4, 99592832), (8, 49796416), (16, 24898208), (19, 20966912), (31, 12850688), (32, 12449104), (38, 10483456), (62, 6425344), (64, 6224552), (76, 5241728), (124, 3212672), (128, 3112276), (152, 2620864), (248, 1606336), (256, 1556138), (304, 1310432), (496, 803168), (512, 778069), (589, 676352), (608, 655216), (992, 401584), (1178, 338176), (1216, 327608), (1321, 301568), (1984, 200792), (2356, 169088), (2432, 163804), (2642, 150784), (3968, 100396), (4712, 84544), (4864, 81902), (5284, 75392), (7936, 50198), (9424, 42272), (9728, 40951), (10568, 37696), (15872, 25099), (18848, 21136)]