19997040

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11903}}^1$

素因数の和:11926

約数の個数: 80

約数和(自身を含む): 70852608

約数和(自身を除く): 50855568

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11903, 23806, 35709, 47612, 59515, 71418, 83321, 95224, 119030, 142836, 166642, 178545, 190448, 238060, 249963, 285672, 333284, 357090, 416605, 476120, 499926, 571344, 666568, 714180, 833210, 952240, 999852, 1249815, 1333136, 1428360, 1666420, 1999704, 2499630, 2856720, 3332840, 3999408, 4999260, 6665680, 9998520, 19997040]

約数ペア:

[(1, 19997040), (2, 9998520), (3, 6665680), (4, 4999260), (5, 3999408), (6, 3332840), (7, 2856720), (8, 2499630), (10, 1999704), (12, 1666420), (14, 1428360), (15, 1333136), (16, 1249815), (20, 999852), (21, 952240), (24, 833210), (28, 714180), (30, 666568), (35, 571344), (40, 499926), (42, 476120), (48, 416605), (56, 357090), (60, 333284), (70, 285672), (80, 249963), (84, 238060), (105, 190448), (112, 178545), (120, 166642), (140, 142836), (168, 119030), (210, 95224), (240, 83321), (280, 71418), (336, 59515), (420, 47612), (560, 35709), (840, 23806), (1680, 11903)]