81687480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3137}}^1$

素因数の和:3189

約数の個数: 128

約数和(自身を含む): 289198080

約数和(自身を除く): 207510600

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1736, 1860, 2170, 2604, 3137, 3255, 3720, 4340, 5208, 6274, 6510, 8680, 9411, 12548, 13020, 15685, 18822, 21959, 25096, 26040, 31370, 37644, 43918, 47055, 62740, 65877, 75288, 87836, 94110, 97247, 109795, 125480, 131754, 175672, 188220, 194494, 219590, 263508, 291741, 329385, 376440, 388988, 439180, 486235, 527016, 583482, 658770, 680729, 777976, 878360, 972470, 1166964, 1317540, 1361458, 1458705, 1944940, 2042187, 2333928, 2635080, 2722916, 2917410, 3403645, 3889880, 4084374, 5445832, 5834820, 6807290, 8168748, 10210935, 11669640, 13614580, 16337496, 20421870, 27229160, 40843740, 81687480]

約数ペア:

[(1, 81687480), (2, 40843740), (3, 27229160), (4, 20421870), (5, 16337496), (6, 13614580), (7, 11669640), (8, 10210935), (10, 8168748), (12, 6807290), (14, 5834820), (15, 5445832), (20, 4084374), (21, 3889880), (24, 3403645), (28, 2917410), (30, 2722916), (31, 2635080), (35, 2333928), (40, 2042187), (42, 1944940), (56, 1458705), (60, 1361458), (62, 1317540), (70, 1166964), (84, 972470), (93, 878360), (105, 777976), (120, 680729), (124, 658770), (140, 583482), (155, 527016), (168, 486235), (186, 439180), (210, 388988), (217, 376440), (248, 329385), (280, 291741), (310, 263508), (372, 219590), (420, 194494), (434, 188220), (465, 175672), (620, 131754), (651, 125480), (744, 109795), (840, 97247), (868, 94110), (930, 87836), (1085, 75288), (1240, 65877), (1302, 62740), (1736, 47055), (1860, 43918), (2170, 37644), (2604, 31370), (3137, 26040), (3255, 25096), (3720, 21959), (4340, 18822), (5208, 15685), (6274, 13020), (6510, 12548), (8680, 9411)]