21375970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 128

約数和(自身を含む): 53747712

約数和(自身を除く): 32371742

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 23, 34, 35, 46, 55, 70, 71, 77, 85, 110, 115, 119, 142, 154, 161, 170, 187, 230, 238, 253, 322, 355, 374, 385, 391, 497, 506, 595, 710, 770, 781, 782, 805, 935, 994, 1190, 1207, 1265, 1309, 1562, 1610, 1633, 1771, 1870, 1955, 2414, 2485, 2530, 2618, 2737, 3266, 3542, 3905, 3910, 4301, 4970, 5467, 5474, 6035, 6545, 7810, 8165, 8449, 8602, 8855, 10934, 11431, 12070, 13090, 13277, 13685, 16330, 16898, 17710, 17963, 21505, 22862, 26554, 27335, 27370, 27761, 30107, 35926, 42245, 43010, 54670, 55522, 57155, 60214, 66385, 84490, 89815, 92939, 114310, 125741, 132770, 138805, 150535, 179630, 185878, 194327, 251482, 277610, 301070, 305371, 388654, 464695, 610742, 628705, 929390, 971635, 1257410, 1526855, 1943270, 2137597, 3053710, 4275194, 10687985, 21375970]

約数ペア:

[(1, 21375970), (2, 10687985), (5, 4275194), (7, 3053710), (10, 2137597), (11, 1943270), (14, 1526855), (17, 1257410), (22, 971635), (23, 929390), (34, 628705), (35, 610742), (46, 464695), (55, 388654), (70, 305371), (71, 301070), (77, 277610), (85, 251482), (110, 194327), (115, 185878), (119, 179630), (142, 150535), (154, 138805), (161, 132770), (170, 125741), (187, 114310), (230, 92939), (238, 89815), (253, 84490), (322, 66385), (355, 60214), (374, 57155), (385, 55522), (391, 54670), (497, 43010), (506, 42245), (595, 35926), (710, 30107), (770, 27761), (781, 27370), (782, 27335), (805, 26554), (935, 22862), (994, 21505), (1190, 17963), (1207, 17710), (1265, 16898), (1309, 16330), (1562, 13685), (1610, 13277), (1633, 13090), (1771, 12070), (1870, 11431), (1955, 10934), (2414, 8855), (2485, 8602), (2530, 8449), (2618, 8165), (2737, 7810), (3266, 6545), (3542, 6035), (3905, 5474), (3910, 5467), (4301, 4970)]