28753240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 67399200

約数和(自身を除く): 38645960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 73, 86, 146, 172, 215, 229, 292, 344, 365, 430, 458, 584, 730, 860, 916, 1145, 1460, 1720, 1832, 2290, 2920, 3139, 4580, 6278, 9160, 9847, 12556, 15695, 16717, 19694, 25112, 31390, 33434, 39388, 49235, 62780, 66868, 78776, 83585, 98470, 125560, 133736, 167170, 196940, 334340, 393880, 668680, 718831, 1437662, 2875324, 3594155, 5750648, 7188310, 14376620, 28753240]

約数ペア:

[(1, 28753240), (2, 14376620), (4, 7188310), (5, 5750648), (8, 3594155), (10, 2875324), (20, 1437662), (40, 718831), (43, 668680), (73, 393880), (86, 334340), (146, 196940), (172, 167170), (215, 133736), (229, 125560), (292, 98470), (344, 83585), (365, 78776), (430, 66868), (458, 62780), (584, 49235), (730, 39388), (860, 33434), (916, 31390), (1145, 25112), (1460, 19694), (1720, 16717), (1832, 15695), (2290, 12556), (2920, 9847), (3139, 9160), (4580, 6278)]