661061520

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{43721}}^1$

素因数の和:43750

約数の個数: 160

約数和(自身を含む): 2602333440

約数和(自身を除く): 1941271920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1512, 1680, 1890, 2160, 2520, 3024, 3780, 5040, 7560, 15120, 43721, 87442, 131163, 174884, 218605, 262326, 306047, 349768, 393489, 437210, 524652, 612094, 655815, 699536, 786978, 874420, 918141, 1049304, 1180467, 1224188, 1311630, 1530235, 1573956, 1748840, 1836282, 1967445, 2098608, 2360934, 2448376, 2623260, 2754423, 3060470, 3147912, 3497680, 3672564, 3934890, 4590705, 4721868, 4896752, 5246520, 5508846, 5902335, 6120940, 6295824, 7345128, 7869780, 8263269, 9181410, 9443736, 10493040, 11017692, 11804670, 12241880, 13772115, 14690256, 15739560, 16526538, 18362820, 18887472, 22035384, 23609340, 24483760, 27544230, 31479120, 33053076, 36725640, 41316345, 44070768, 47218680, 55088460, 66106152, 73451280, 82632690, 94437360, 110176920, 132212304, 165265380, 220353840, 330530760, 661061520]

約数ペア:

[(1, 661061520), (2, 330530760), (3, 220353840), (4, 165265380), (5, 132212304), (6, 110176920), (7, 94437360), (8, 82632690), (9, 73451280), (10, 66106152), (12, 55088460), (14, 47218680), (15, 44070768), (16, 41316345), (18, 36725640), (20, 33053076), (21, 31479120), (24, 27544230), (27, 24483760), (28, 23609340), (30, 22035384), (35, 18887472), (36, 18362820), (40, 16526538), (42, 15739560), (45, 14690256), (48, 13772115), (54, 12241880), (56, 11804670), (60, 11017692), (63, 10493040), (70, 9443736), (72, 9181410), (80, 8263269), (84, 7869780), (90, 7345128), (105, 6295824), (108, 6120940), (112, 5902335), (120, 5508846), (126, 5246520), (135, 4896752), (140, 4721868), (144, 4590705), (168, 3934890), (180, 3672564), (189, 3497680), (210, 3147912), (216, 3060470), (240, 2754423), (252, 2623260), (270, 2448376), (280, 2360934), (315, 2098608), (336, 1967445), (360, 1836282), (378, 1748840), (420, 1573956), (432, 1530235), (504, 1311630), (540, 1224188), (560, 1180467), (630, 1049304), (720, 918141), (756, 874420), (840, 786978), (945, 699536), (1008, 655815), (1080, 612094), (1260, 524652), (1512, 437210), (1680, 393489), (1890, 349768), (2160, 306047), (2520, 262326), (3024, 218605), (3780, 174884), (5040, 131163), (7560, 87442), (15120, 43721)]