20217960

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:208

約数の個数: 192

約数和(自身を含む): 76826880

約数和(自身を除く): 56608920

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, 56, 60, 63, 70, 71, 72, 84, 90, 105, 113, 120, 126, 140, 142, 168, 180, 210, 213, 226, 252, 280, 284, 315, 339, 355, 360, 420, 426, 452, 497, 504, 565, 568, 630, 639, 678, 710, 791, 840, 852, 904, 994, 1017, 1065, 1130, 1260, 1278, 1356, 1420, 1491, 1582, 1695, 1704, 1988, 2034, 2130, 2260, 2373, 2485, 2520, 2556, 2712, 2840, 2982, 3164, 3195, 3390, 3955, 3976, 4068, 4260, 4473, 4520, 4746, 4970, 5085, 5112, 5964, 6328, 6390, 6780, 7119, 7455, 7910, 8023, 8136, 8520, 8946, 9492, 9940, 10170, 11865, 11928, 12780, 13560, 14238, 14910, 15820, 16046, 17892, 18984, 19880, 20340, 22365, 23730, 24069, 25560, 28476, 29820, 31640, 32092, 35595, 35784, 40115, 40680, 44730, 47460, 48138, 56161, 56952, 59640, 64184, 71190, 72207, 80230, 89460, 94920, 96276, 112322, 120345, 142380, 144414, 160460, 168483, 178920, 192552, 224644, 240690, 280805, 284760, 288828, 320920, 336966, 361035, 449288, 481380, 505449, 561610, 577656, 673932, 722070, 842415, 962760, 1010898, 1123220, 1347864, 1444140, 1684830, 2021796, 2246440, 2527245, 2888280, 3369660, 4043592, 5054490, 6739320, 10108980, 20217960]

約数ペア:

[(1, 20217960), (2, 10108980), (3, 6739320), (4, 5054490), (5, 4043592), (6, 3369660), (7, 2888280), (8, 2527245), (9, 2246440), (10, 2021796), (12, 1684830), (14, 1444140), (15, 1347864), (18, 1123220), (20, 1010898), (21, 962760), (24, 842415), (28, 722070), (30, 673932), (35, 577656), (36, 561610), (40, 505449), (42, 481380), (45, 449288), (56, 361035), (60, 336966), (63, 320920), (70, 288828), (71, 284760), (72, 280805), (84, 240690), (90, 224644), (105, 192552), (113, 178920), (120, 168483), (126, 160460), (140, 144414), (142, 142380), (168, 120345), (180, 112322), (210, 96276), (213, 94920), (226, 89460), (252, 80230), (280, 72207), (284, 71190), (315, 64184), (339, 59640), (355, 56952), (360, 56161), (420, 48138), (426, 47460), (452, 44730), (497, 40680), (504, 40115), (565, 35784), (568, 35595), (630, 32092), (639, 31640), (678, 29820), (710, 28476), (791, 25560), (840, 24069), (852, 23730), (904, 22365), (994, 20340), (1017, 19880), (1065, 18984), (1130, 17892), (1260, 16046), (1278, 15820), (1356, 14910), (1420, 14238), (1491, 13560), (1582, 12780), (1695, 11928), (1704, 11865), (1988, 10170), (2034, 9940), (2130, 9492), (2260, 8946), (2373, 8520), (2485, 8136), (2520, 8023), (2556, 7910), (2712, 7455), (2840, 7119), (2982, 6780), (3164, 6390), (3195, 6328), (3390, 5964), (3955, 5112), (3976, 5085), (4068, 4970), (4260, 4746), (4473, 4520)]