19982760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23789}}^1$

素因数の和:23810

約数の個数: 64

約数和(自身を含む): 68515200

約数和(自身を除く): 48532440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 23789, 47578, 71367, 95156, 118945, 142734, 166523, 190312, 237890, 285468, 333046, 356835, 475780, 499569, 570936, 666092, 713670, 832615, 951560, 999138, 1332184, 1427340, 1665230, 1998276, 2497845, 2854680, 3330460, 3996552, 4995690, 6660920, 9991380, 19982760]

約数ペア:

[(1, 19982760), (2, 9991380), (3, 6660920), (4, 4995690), (5, 3996552), (6, 3330460), (7, 2854680), (8, 2497845), (10, 1998276), (12, 1665230), (14, 1427340), (15, 1332184), (20, 999138), (21, 951560), (24, 832615), (28, 713670), (30, 666092), (35, 570936), (40, 499569), (42, 475780), (56, 356835), (60, 333046), (70, 285468), (84, 237890), (105, 190312), (120, 166523), (140, 142734), (168, 118945), (210, 95156), (280, 71367), (420, 47578), (840, 23789)]