40401920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{607}}^1$

素因数の和:645

約数の個数: 88

約数和(自身を含む): 104544384

約数和(自身を除く): 64142464

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 607, 640, 832, 1024, 1040, 1214, 1280, 1664, 2080, 2428, 2560, 3035, 3328, 4160, 4856, 5120, 6070, 6656, 7891, 8320, 9712, 12140, 13312, 15782, 16640, 19424, 24280, 31564, 33280, 38848, 39455, 48560, 63128, 66560, 77696, 78910, 97120, 126256, 155392, 157820, 194240, 252512, 310784, 315640, 388480, 505024, 621568, 631280, 776960, 1010048, 1262560, 1553920, 2020096, 2525120, 3107840, 4040192, 5050240, 8080384, 10100480, 20200960, 40401920]

約数ペア:

[(1, 40401920), (2, 20200960), (4, 10100480), (5, 8080384), (8, 5050240), (10, 4040192), (13, 3107840), (16, 2525120), (20, 2020096), (26, 1553920), (32, 1262560), (40, 1010048), (52, 776960), (64, 631280), (65, 621568), (80, 505024), (104, 388480), (128, 315640), (130, 310784), (160, 252512), (208, 194240), (256, 157820), (260, 155392), (320, 126256), (416, 97120), (512, 78910), (520, 77696), (607, 66560), (640, 63128), (832, 48560), (1024, 39455), (1040, 38848), (1214, 33280), (1280, 31564), (1664, 24280), (2080, 19424), (2428, 16640), (2560, 15782), (3035, 13312), (3328, 12140), (4160, 9712), (4856, 8320), (5120, 7891), (6070, 6656)]