87402420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1070

約数の個数: 144

約数和(自身を含む): 307577088

約数和(自身を除く): 220174668

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 355, 420, 426, 497, 630, 639, 710, 852, 977, 994, 1065, 1260, 1278, 1420, 1491, 1954, 1988, 2130, 2485, 2556, 2931, 2982, 3195, 3908, 4260, 4473, 4885, 4970, 5862, 5964, 6390, 6839, 7455, 8793, 8946, 9770, 9940, 11724, 12780, 13678, 14655, 14910, 17586, 17892, 19540, 20517, 22365, 27356, 29310, 29820, 34195, 35172, 41034, 43965, 44730, 58620, 61551, 68390, 69367, 82068, 87930, 89460, 102585, 123102, 136780, 138734, 175860, 205170, 208101, 246204, 277468, 307755, 346835, 410340, 416202, 485569, 615510, 624303, 693670, 832404, 971138, 1040505, 1231020, 1248606, 1387340, 1456707, 1942276, 2081010, 2427845, 2497212, 2913414, 3121515, 4162020, 4370121, 4855690, 5826828, 6243030, 7283535, 8740242, 9711380, 12486060, 14567070, 17480484, 21850605, 29134140, 43701210, 87402420]

約数ペア:

[(1, 87402420), (2, 43701210), (3, 29134140), (4, 21850605), (5, 17480484), (6, 14567070), (7, 12486060), (9, 9711380), (10, 8740242), (12, 7283535), (14, 6243030), (15, 5826828), (18, 4855690), (20, 4370121), (21, 4162020), (28, 3121515), (30, 2913414), (35, 2497212), (36, 2427845), (42, 2081010), (45, 1942276), (60, 1456707), (63, 1387340), (70, 1248606), (71, 1231020), (84, 1040505), (90, 971138), (105, 832404), (126, 693670), (140, 624303), (142, 615510), (180, 485569), (210, 416202), (213, 410340), (252, 346835), (284, 307755), (315, 277468), (355, 246204), (420, 208101), (426, 205170), (497, 175860), (630, 138734), (639, 136780), (710, 123102), (852, 102585), (977, 89460), (994, 87930), (1065, 82068), (1260, 69367), (1278, 68390), (1420, 61551), (1491, 58620), (1954, 44730), (1988, 43965), (2130, 41034), (2485, 35172), (2556, 34195), (2931, 29820), (2982, 29310), (3195, 27356), (3908, 22365), (4260, 20517), (4473, 19540), (4885, 17892), (4970, 17586), (5862, 14910), (5964, 14655), (6390, 13678), (6839, 12780), (7455, 11724), (8793, 9940), (8946, 9770)]