28918260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:470

約数の個数: 144

約数和(自身を含む): 102211200

約数和(自身を除く): 73292940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 59, 60, 63, 70, 84, 90, 105, 118, 126, 140, 177, 180, 210, 236, 252, 295, 315, 354, 389, 413, 420, 531, 590, 630, 708, 778, 826, 885, 1062, 1167, 1180, 1239, 1260, 1556, 1652, 1770, 1945, 2065, 2124, 2334, 2478, 2655, 2723, 3501, 3540, 3717, 3890, 4130, 4668, 4956, 5310, 5446, 5835, 6195, 7002, 7434, 7780, 8169, 8260, 10620, 10892, 11670, 12390, 13615, 14004, 14868, 16338, 17505, 18585, 22951, 23340, 24507, 24780, 27230, 32676, 35010, 37170, 40845, 45902, 49014, 54460, 68853, 70020, 74340, 81690, 91804, 98028, 114755, 122535, 137706, 160657, 163380, 206559, 229510, 245070, 275412, 321314, 344265, 413118, 459020, 481971, 490140, 642628, 688530, 803285, 826236, 963942, 1032795, 1377060, 1445913, 1606570, 1927884, 2065590, 2409855, 2891826, 3213140, 4131180, 4819710, 5783652, 7229565, 9639420, 14459130, 28918260]

約数ペア:

[(1, 28918260), (2, 14459130), (3, 9639420), (4, 7229565), (5, 5783652), (6, 4819710), (7, 4131180), (9, 3213140), (10, 2891826), (12, 2409855), (14, 2065590), (15, 1927884), (18, 1606570), (20, 1445913), (21, 1377060), (28, 1032795), (30, 963942), (35, 826236), (36, 803285), (42, 688530), (45, 642628), (59, 490140), (60, 481971), (63, 459020), (70, 413118), (84, 344265), (90, 321314), (105, 275412), (118, 245070), (126, 229510), (140, 206559), (177, 163380), (180, 160657), (210, 137706), (236, 122535), (252, 114755), (295, 98028), (315, 91804), (354, 81690), (389, 74340), (413, 70020), (420, 68853), (531, 54460), (590, 49014), (630, 45902), (708, 40845), (778, 37170), (826, 35010), (885, 32676), (1062, 27230), (1167, 24780), (1180, 24507), (1239, 23340), (1260, 22951), (1556, 18585), (1652, 17505), (1770, 16338), (1945, 14868), (2065, 14004), (2124, 13615), (2334, 12390), (2478, 11670), (2655, 10892), (2723, 10620), (3501, 8260), (3540, 8169), (3717, 7780), (3890, 7434), (4130, 7002), (4668, 6195), (4956, 5835), (5310, 5446)]