1999014920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{21569}}^1$

素因数の和:21918

約数の個数: 64

約数和(自身を含む): 5156092800

約数和(自身を除く): 3157077880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 331, 662, 1324, 1655, 2317, 2648, 3310, 4634, 6620, 9268, 11585, 13240, 18536, 21569, 23170, 43138, 46340, 86276, 92680, 107845, 150983, 172552, 215690, 301966, 431380, 603932, 754915, 862760, 1207864, 1509830, 3019660, 6039320, 7139339, 14278678, 28557356, 35696695, 49975373, 57114712, 71393390, 99950746, 142786780, 199901492, 249876865, 285573560, 399802984, 499753730, 999507460, 1999014920]

約数ペア:

[(1, 1999014920), (2, 999507460), (4, 499753730), (5, 399802984), (7, 285573560), (8, 249876865), (10, 199901492), (14, 142786780), (20, 99950746), (28, 71393390), (35, 57114712), (40, 49975373), (56, 35696695), (70, 28557356), (140, 14278678), (280, 7139339), (331, 6039320), (662, 3019660), (1324, 1509830), (1655, 1207864), (2317, 862760), (2648, 754915), (3310, 603932), (4634, 431380), (6620, 301966), (9268, 215690), (11585, 172552), (13240, 150983), (18536, 107845), (21569, 92680), (23170, 86276), (43138, 46340)]