2019497720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{383}}^1\times {\mathrm{2161}}^1$

素因数の和:2616

約数の個数: 64

約数和(自身を含む): 4632560640

約数和(自身を除く): 2613062920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 383, 488, 610, 766, 1220, 1532, 1915, 2161, 2440, 3064, 3830, 4322, 7660, 8644, 10805, 15320, 17288, 21610, 23363, 43220, 46726, 86440, 93452, 116815, 131821, 186904, 233630, 263642, 467260, 527284, 659105, 827663, 934520, 1054568, 1318210, 1655326, 2636420, 3310652, 4138315, 5272840, 6621304, 8276630, 16553260, 33106520, 50487443, 100974886, 201949772, 252437215, 403899544, 504874430, 1009748860, 2019497720]

約数ペア:

[(1, 2019497720), (2, 1009748860), (4, 504874430), (5, 403899544), (8, 252437215), (10, 201949772), (20, 100974886), (40, 50487443), (61, 33106520), (122, 16553260), (244, 8276630), (305, 6621304), (383, 5272840), (488, 4138315), (610, 3310652), (766, 2636420), (1220, 1655326), (1532, 1318210), (1915, 1054568), (2161, 934520), (2440, 827663), (3064, 659105), (3830, 527284), (4322, 467260), (7660, 263642), (8644, 233630), (10805, 186904), (15320, 131821), (17288, 116815), (21610, 93452), (23363, 86440), (43220, 46726)]