19843840

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 48933360

約数和(自身を除く): 29089520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 419, 592, 640, 740, 838, 1184, 1280, 1480, 1676, 2095, 2368, 2960, 3352, 4190, 4736, 5920, 6704, 8380, 9472, 11840, 13408, 15503, 16760, 23680, 26816, 31006, 33520, 47360, 53632, 62012, 67040, 77515, 107264, 124024, 134080, 155030, 248048, 268160, 310060, 496096, 536320, 620120, 992192, 1240240, 1984384, 2480480, 3968768, 4960960, 9921920, 19843840]

約数ペア:

[(1, 19843840), (2, 9921920), (4, 4960960), (5, 3968768), (8, 2480480), (10, 1984384), (16, 1240240), (20, 992192), (32, 620120), (37, 536320), (40, 496096), (64, 310060), (74, 268160), (80, 248048), (128, 155030), (148, 134080), (160, 124024), (185, 107264), (256, 77515), (296, 67040), (320, 62012), (370, 53632), (419, 47360), (592, 33520), (640, 31006), (740, 26816), (838, 23680), (1184, 16760), (1280, 15503), (1480, 13408), (1676, 11840), (2095, 9472), (2368, 8380), (2960, 6704), (3352, 5920), (4190, 4736)]