645704704

素因数分解:

$2^{10}\times {\mathrm{31}}^1\times {\mathrm{20341}}^1$

素因数の和:20392

約数の個数: 44

約数和(自身を含む): 1332482368

約数和(自身を除く): 686777664

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1024, 1984, 3968, 7936, 15872, 20341, 31744, 40682, 81364, 162728, 325456, 630571, 650912, 1261142, 1301824, 2522284, 2603648, 5044568, 5207296, 10089136, 10414592, 20178272, 20829184, 40356544, 80713088, 161426176, 322852352, 645704704]

約数ペア:

[(1, 645704704), (2, 322852352), (4, 161426176), (8, 80713088), (16, 40356544), (31, 20829184), (32, 20178272), (62, 10414592), (64, 10089136), (124, 5207296), (128, 5044568), (248, 2603648), (256, 2522284), (496, 1301824), (512, 1261142), (992, 650912), (1024, 630571), (1984, 325456), (3968, 162728), (7936, 81364), (15872, 40682), (20341, 31744)]