20163979480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{27431}}^1$

素因数の和:27529

約数の個数: 128

約数和(自身を含む): 51194695680

約数和(自身を除く): 31030716200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 23, 34, 40, 46, 47, 68, 85, 92, 94, 115, 136, 170, 184, 188, 230, 235, 340, 376, 391, 460, 470, 680, 782, 799, 920, 940, 1081, 1564, 1598, 1880, 1955, 2162, 3128, 3196, 3910, 3995, 4324, 5405, 6392, 7820, 7990, 8648, 10810, 15640, 15980, 18377, 21620, 27431, 31960, 36754, 43240, 54862, 73508, 91885, 109724, 137155, 147016, 183770, 219448, 274310, 367540, 466327, 548620, 630913, 735080, 932654, 1097240, 1261826, 1289257, 1865308, 2331635, 2523652, 2578514, 3154565, 3730616, 4663270, 5047304, 5157028, 6309130, 6446285, 9326540, 10314056, 10725521, 12618260, 12892570, 18653080, 21451042, 21917369, 25236520, 25785140, 29652911, 42902084, 43834738, 51570280, 53627605, 59305822, 85804168, 87669476, 107255210, 109586845, 118611644, 148264555, 175338952, 214510420, 219173690, 237223288, 296529110, 429020840, 438347380, 504099487, 593058220, 876694760, 1008198974, 1186116440, 2016397948, 2520497435, 4032795896, 5040994870, 10081989740, 20163979480]

約数ペア:

[(1, 20163979480), (2, 10081989740), (4, 5040994870), (5, 4032795896), (8, 2520497435), (10, 2016397948), (17, 1186116440), (20, 1008198974), (23, 876694760), (34, 593058220), (40, 504099487), (46, 438347380), (47, 429020840), (68, 296529110), (85, 237223288), (92, 219173690), (94, 214510420), (115, 175338952), (136, 148264555), (170, 118611644), (184, 109586845), (188, 107255210), (230, 87669476), (235, 85804168), (340, 59305822), (376, 53627605), (391, 51570280), (460, 43834738), (470, 42902084), (680, 29652911), (782, 25785140), (799, 25236520), (920, 21917369), (940, 21451042), (1081, 18653080), (1564, 12892570), (1598, 12618260), (1880, 10725521), (1955, 10314056), (2162, 9326540), (3128, 6446285), (3196, 6309130), (3910, 5157028), (3995, 5047304), (4324, 4663270), (5405, 3730616), (6392, 3154565), (7820, 2578514), (7990, 2523652), (8648, 2331635), (10810, 1865308), (15640, 1289257), (15980, 1261826), (18377, 1097240), (21620, 932654), (27431, 735080), (31960, 630913), (36754, 548620), (43240, 466327), (54862, 367540), (73508, 274310), (91885, 219448), (109724, 183770), (137155, 147016)]