19903380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47389}}^1$

素因数の和:47408

約数の個数: 48

約数和(自身を含む): 63692160

約数和(自身を除く): 43788780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47389, 94778, 142167, 189556, 236945, 284334, 331723, 473890, 568668, 663446, 710835, 947780, 995169, 1326892, 1421670, 1658615, 1990338, 2843340, 3317230, 3980676, 4975845, 6634460, 9951690, 19903380]

約数ペア:

[(1, 19903380), (2, 9951690), (3, 6634460), (4, 4975845), (5, 3980676), (6, 3317230), (7, 2843340), (10, 1990338), (12, 1658615), (14, 1421670), (15, 1326892), (20, 995169), (21, 947780), (28, 710835), (30, 663446), (35, 568668), (42, 473890), (60, 331723), (70, 284334), (84, 236945), (105, 189556), (140, 142167), (210, 94778), (420, 47389)]