20808768460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1\times {\mathrm{7523}}^1$

素因数の和:7831

約数の個数: 96

約数和(自身を含む): 47780409600

約数和(自身を除く): 26971641140

約数列:

[1, 2, 4, 5, 10, 19, 20, 29, 38, 58, 76, 95, 116, 145, 190, 251, 290, 380, 502, 551, 580, 1004, 1102, 1255, 2204, 2510, 2755, 4769, 5020, 5510, 7279, 7523, 9538, 11020, 14558, 15046, 19076, 23845, 29116, 30092, 36395, 37615, 47690, 72790, 75230, 95380, 138301, 142937, 145580, 150460, 218167, 276602, 285874, 436334, 553204, 571748, 691505, 714685, 872668, 1090835, 1383010, 1429370, 1888273, 2181670, 2766020, 2858740, 3776546, 4145173, 4363340, 7553092, 8290346, 9441365, 16580692, 18882730, 20725865, 35877187, 37765460, 41451730, 54759917, 71754374, 82903460, 109519834, 143508748, 179385935, 219039668, 273799585, 358771870, 547599170, 717543740, 1040438423, 1095198340, 2080876846, 4161753692, 5202192115, 10404384230, 20808768460]

約数ペア:

[(1, 20808768460), (2, 10404384230), (4, 5202192115), (5, 4161753692), (10, 2080876846), (19, 1095198340), (20, 1040438423), (29, 717543740), (38, 547599170), (58, 358771870), (76, 273799585), (95, 219039668), (116, 179385935), (145, 143508748), (190, 109519834), (251, 82903460), (290, 71754374), (380, 54759917), (502, 41451730), (551, 37765460), (580, 35877187), (1004, 20725865), (1102, 18882730), (1255, 16580692), (2204, 9441365), (2510, 8290346), (2755, 7553092), (4769, 4363340), (5020, 4145173), (5510, 3776546), (7279, 2858740), (7523, 2766020), (9538, 2181670), (11020, 1888273), (14558, 1429370), (15046, 1383010), (19076, 1090835), (23845, 872668), (29116, 714685), (30092, 691505), (36395, 571748), (37615, 553204), (47690, 436334), (72790, 285874), (75230, 276602), (95380, 218167), (138301, 150460), (142937, 145580)]