999958840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{12973}}^1$

素因数の和:13072

約数の個数: 64

約数和(自身を含む): 2354002560

約数和(自身を除く): 1354043720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 328, 376, 410, 470, 820, 940, 1640, 1880, 1927, 3854, 7708, 9635, 12973, 15416, 19270, 25946, 38540, 51892, 64865, 77080, 103784, 129730, 259460, 518920, 531893, 609731, 1063786, 1219462, 2127572, 2438924, 2659465, 3048655, 4255144, 4877848, 5318930, 6097310, 10637860, 12194620, 21275720, 24389240, 24998971, 49997942, 99995884, 124994855, 199991768, 249989710, 499979420, 999958840]

約数ペア:

[(1, 999958840), (2, 499979420), (4, 249989710), (5, 199991768), (8, 124994855), (10, 99995884), (20, 49997942), (40, 24998971), (41, 24389240), (47, 21275720), (82, 12194620), (94, 10637860), (164, 6097310), (188, 5318930), (205, 4877848), (235, 4255144), (328, 3048655), (376, 2659465), (410, 2438924), (470, 2127572), (820, 1219462), (940, 1063786), (1640, 609731), (1880, 531893), (1927, 518920), (3854, 259460), (7708, 129730), (9635, 103784), (12973, 77080), (15416, 64865), (19270, 51892), (25946, 38540)]