81356220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2417}}^1$

素因数の和:2460

約数の個数: 144

約数和(自身を含む): 285169248

約数和(自身を除く): 203813028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 30, 33, 34, 36, 44, 45, 51, 55, 60, 66, 68, 85, 90, 99, 102, 110, 132, 153, 165, 170, 180, 187, 198, 204, 220, 255, 306, 330, 340, 374, 396, 495, 510, 561, 612, 660, 748, 765, 935, 990, 1020, 1122, 1530, 1683, 1870, 1980, 2244, 2417, 2805, 3060, 3366, 3740, 4834, 5610, 6732, 7251, 8415, 9668, 11220, 12085, 14502, 16830, 21753, 24170, 26587, 29004, 33660, 36255, 41089, 43506, 48340, 53174, 72510, 79761, 82178, 87012, 106348, 108765, 123267, 132935, 145020, 159522, 164356, 205445, 217530, 239283, 246534, 265870, 319044, 369801, 398805, 410890, 435060, 451979, 478566, 493068, 531740, 616335, 739602, 797610, 821780, 903958, 957132, 1196415, 1232670, 1355937, 1479204, 1595220, 1807916, 1849005, 2259895, 2392830, 2465340, 2711874, 3698010, 4067811, 4519790, 4785660, 5423748, 6779685, 7396020, 8135622, 9039580, 13559370, 16271244, 20339055, 27118740, 40678110, 81356220]

約数ペア:

[(1, 81356220), (2, 40678110), (3, 27118740), (4, 20339055), (5, 16271244), (6, 13559370), (9, 9039580), (10, 8135622), (11, 7396020), (12, 6779685), (15, 5423748), (17, 4785660), (18, 4519790), (20, 4067811), (22, 3698010), (30, 2711874), (33, 2465340), (34, 2392830), (36, 2259895), (44, 1849005), (45, 1807916), (51, 1595220), (55, 1479204), (60, 1355937), (66, 1232670), (68, 1196415), (85, 957132), (90, 903958), (99, 821780), (102, 797610), (110, 739602), (132, 616335), (153, 531740), (165, 493068), (170, 478566), (180, 451979), (187, 435060), (198, 410890), (204, 398805), (220, 369801), (255, 319044), (306, 265870), (330, 246534), (340, 239283), (374, 217530), (396, 205445), (495, 164356), (510, 159522), (561, 145020), (612, 132935), (660, 123267), (748, 108765), (765, 106348), (935, 87012), (990, 82178), (1020, 79761), (1122, 72510), (1530, 53174), (1683, 48340), (1870, 43506), (1980, 41089), (2244, 36255), (2417, 33660), (2805, 29004), (3060, 26587), (3366, 24170), (3740, 21753), (4834, 16830), (5610, 14502), (6732, 12085), (7251, 11220), (8415, 9668)]