31720780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{601}}^1$

素因数の和:659

約数の個数: 96

約数和(自身を含む): 84954240

約数和(自身を除く): 53233460

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 29, 35, 52, 58, 65, 70, 91, 116, 130, 140, 145, 182, 203, 260, 290, 364, 377, 406, 455, 580, 601, 754, 812, 910, 1015, 1202, 1508, 1820, 1885, 2030, 2404, 2639, 3005, 3770, 4060, 4207, 5278, 6010, 7540, 7813, 8414, 10556, 12020, 13195, 15626, 16828, 17429, 21035, 26390, 31252, 34858, 39065, 42070, 52780, 54691, 69716, 78130, 84140, 87145, 109382, 122003, 156260, 174290, 218764, 226577, 244006, 273455, 348580, 453154, 488012, 546910, 610015, 906308, 1093820, 1132885, 1220030, 1586039, 2265770, 2440060, 3172078, 4531540, 6344156, 7930195, 15860390, 31720780]

約数ペア:

[(1, 31720780), (2, 15860390), (4, 7930195), (5, 6344156), (7, 4531540), (10, 3172078), (13, 2440060), (14, 2265770), (20, 1586039), (26, 1220030), (28, 1132885), (29, 1093820), (35, 906308), (52, 610015), (58, 546910), (65, 488012), (70, 453154), (91, 348580), (116, 273455), (130, 244006), (140, 226577), (145, 218764), (182, 174290), (203, 156260), (260, 122003), (290, 109382), (364, 87145), (377, 84140), (406, 78130), (455, 69716), (580, 54691), (601, 52780), (754, 42070), (812, 39065), (910, 34858), (1015, 31252), (1202, 26390), (1508, 21035), (1820, 17429), (1885, 16828), (2030, 15626), (2404, 13195), (2639, 12020), (3005, 10556), (3770, 8414), (4060, 7813), (4207, 7540), (5278, 6010)]