81297960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{197}}^1$

素因数の和:411

約数の個数: 128

約数和(自身を含む): 259459200

約数和(自身を除く): 178161240

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 181, 190, 197, 228, 285, 362, 380, 394, 456, 543, 570, 591, 724, 760, 788, 905, 985, 1086, 1140, 1182, 1448, 1576, 1810, 1970, 2172, 2280, 2364, 2715, 2955, 3439, 3620, 3743, 3940, 4344, 4728, 5430, 5910, 6878, 7240, 7486, 7880, 10317, 10860, 11229, 11820, 13756, 14972, 17195, 18715, 20634, 21720, 22458, 23640, 27512, 29944, 34390, 35657, 37430, 41268, 44916, 51585, 56145, 68780, 71314, 74860, 82536, 89832, 103170, 106971, 112290, 137560, 142628, 149720, 178285, 206340, 213942, 224580, 285256, 356570, 412680, 427884, 449160, 534855, 677483, 713140, 855768, 1069710, 1354966, 1426280, 2032449, 2139420, 2709932, 3387415, 4064898, 4278840, 5419864, 6774830, 8129796, 10162245, 13549660, 16259592, 20324490, 27099320, 40648980, 81297960]

約数ペア:

[(1, 81297960), (2, 40648980), (3, 27099320), (4, 20324490), (5, 16259592), (6, 13549660), (8, 10162245), (10, 8129796), (12, 6774830), (15, 5419864), (19, 4278840), (20, 4064898), (24, 3387415), (30, 2709932), (38, 2139420), (40, 2032449), (57, 1426280), (60, 1354966), (76, 1069710), (95, 855768), (114, 713140), (120, 677483), (152, 534855), (181, 449160), (190, 427884), (197, 412680), (228, 356570), (285, 285256), (362, 224580), (380, 213942), (394, 206340), (456, 178285), (543, 149720), (570, 142628), (591, 137560), (724, 112290), (760, 106971), (788, 103170), (905, 89832), (985, 82536), (1086, 74860), (1140, 71314), (1182, 68780), (1448, 56145), (1576, 51585), (1810, 44916), (1970, 41268), (2172, 37430), (2280, 35657), (2364, 34390), (2715, 29944), (2955, 27512), (3439, 23640), (3620, 22458), (3743, 21720), (3940, 20634), (4344, 18715), (4728, 17195), (5430, 14972), (5910, 13756), (6878, 11820), (7240, 11229), (7486, 10860), (7880, 10317)]