20938680

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{1187}}^1$

素因数の和:1218

約数の個数: 144

約数和(自身を含む): 79227720

約数和(自身を除く): 58289040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 49, 56, 60, 63, 70, 72, 84, 90, 98, 105, 120, 126, 140, 147, 168, 180, 196, 210, 245, 252, 280, 294, 315, 360, 392, 420, 441, 490, 504, 588, 630, 735, 840, 882, 980, 1176, 1187, 1260, 1470, 1764, 1960, 2205, 2374, 2520, 2940, 3528, 3561, 4410, 4748, 5880, 5935, 7122, 8309, 8820, 9496, 10683, 11870, 14244, 16618, 17640, 17805, 21366, 23740, 24927, 28488, 33236, 35610, 41545, 42732, 47480, 49854, 53415, 58163, 66472, 71220, 74781, 83090, 85464, 99708, 106830, 116326, 124635, 142440, 149562, 166180, 174489, 199416, 213660, 232652, 249270, 290815, 299124, 332360, 348978, 373905, 427320, 465304, 498540, 523467, 581630, 598248, 697956, 747810, 872445, 997080, 1046934, 1163260, 1395912, 1495620, 1744890, 2093868, 2326520, 2617335, 2991240, 3489780, 4187736, 5234670, 6979560, 10469340, 20938680]

約数ペア:

[(1, 20938680), (2, 10469340), (3, 6979560), (4, 5234670), (5, 4187736), (6, 3489780), (7, 2991240), (8, 2617335), (9, 2326520), (10, 2093868), (12, 1744890), (14, 1495620), (15, 1395912), (18, 1163260), (20, 1046934), (21, 997080), (24, 872445), (28, 747810), (30, 697956), (35, 598248), (36, 581630), (40, 523467), (42, 498540), (45, 465304), (49, 427320), (56, 373905), (60, 348978), (63, 332360), (70, 299124), (72, 290815), (84, 249270), (90, 232652), (98, 213660), (105, 199416), (120, 174489), (126, 166180), (140, 149562), (147, 142440), (168, 124635), (180, 116326), (196, 106830), (210, 99708), (245, 85464), (252, 83090), (280, 74781), (294, 71220), (315, 66472), (360, 58163), (392, 53415), (420, 49854), (441, 47480), (490, 42732), (504, 41545), (588, 35610), (630, 33236), (735, 28488), (840, 24927), (882, 23740), (980, 21366), (1176, 17805), (1187, 17640), (1260, 16618), (1470, 14244), (1764, 11870), (1960, 10683), (2205, 9496), (2374, 8820), (2520, 8309), (2940, 7122), (3528, 5935), (3561, 5880), (4410, 4748)]