221353680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:389

約数の個数: 160

約数和(自身を含む): 712990080

約数和(自身を除く): 491636400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 89, 120, 129, 172, 178, 215, 240, 241, 258, 267, 344, 356, 430, 445, 482, 516, 534, 645, 688, 712, 723, 860, 890, 964, 1032, 1068, 1205, 1290, 1335, 1424, 1446, 1720, 1780, 1928, 2064, 2136, 2410, 2580, 2670, 2892, 3440, 3560, 3615, 3827, 3856, 4272, 4820, 5160, 5340, 5784, 7120, 7230, 7654, 9640, 10320, 10363, 10680, 11481, 11568, 14460, 15308, 19135, 19280, 20726, 21360, 21449, 22962, 28920, 30616, 31089, 38270, 41452, 42898, 45924, 51815, 57405, 57840, 61232, 62178, 64347, 76540, 82904, 85796, 91848, 103630, 107245, 114810, 124356, 128694, 153080, 155445, 165808, 171592, 183696, 207260, 214490, 229620, 248712, 257388, 306160, 310890, 321735, 343184, 414520, 428980, 459240, 497424, 514776, 621780, 643470, 829040, 857960, 918480, 922307, 1029552, 1243560, 1286940, 1715920, 1844614, 2487120, 2573880, 2766921, 3689228, 4611535, 5147760, 5533842, 7378456, 9223070, 11067684, 13834605, 14756912, 18446140, 22135368, 27669210, 36892280, 44270736, 55338420, 73784560, 110676840, 221353680]

約数ペア:

[(1, 221353680), (2, 110676840), (3, 73784560), (4, 55338420), (5, 44270736), (6, 36892280), (8, 27669210), (10, 22135368), (12, 18446140), (15, 14756912), (16, 13834605), (20, 11067684), (24, 9223070), (30, 7378456), (40, 5533842), (43, 5147760), (48, 4611535), (60, 3689228), (80, 2766921), (86, 2573880), (89, 2487120), (120, 1844614), (129, 1715920), (172, 1286940), (178, 1243560), (215, 1029552), (240, 922307), (241, 918480), (258, 857960), (267, 829040), (344, 643470), (356, 621780), (430, 514776), (445, 497424), (482, 459240), (516, 428980), (534, 414520), (645, 343184), (688, 321735), (712, 310890), (723, 306160), (860, 257388), (890, 248712), (964, 229620), (1032, 214490), (1068, 207260), (1205, 183696), (1290, 171592), (1335, 165808), (1424, 155445), (1446, 153080), (1720, 128694), (1780, 124356), (1928, 114810), (2064, 107245), (2136, 103630), (2410, 91848), (2580, 85796), (2670, 82904), (2892, 76540), (3440, 64347), (3560, 62178), (3615, 61232), (3827, 57840), (3856, 57405), (4272, 51815), (4820, 45924), (5160, 42898), (5340, 41452), (5784, 38270), (7120, 31089), (7230, 30616), (7654, 28920), (9640, 22962), (10320, 21449), (10363, 21360), (10680, 20726), (11481, 19280), (11568, 19135), (14460, 15308)]