201719390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1$

素因数の和:345

約数の個数: 64

約数和(自身を含む): 393984000

約数和(自身を除く): 192264610

約数列:

[1, 2, 5, 10, 19, 38, 79, 89, 95, 151, 158, 178, 190, 302, 395, 445, 755, 790, 890, 1501, 1510, 1691, 2869, 3002, 3382, 5738, 7031, 7505, 8455, 11929, 13439, 14062, 14345, 15010, 16910, 23858, 26878, 28690, 35155, 59645, 67195, 70310, 119290, 133589, 134390, 226651, 255341, 267178, 453302, 510682, 667945, 1061681, 1133255, 1276705, 1335890, 2123362, 2266510, 2553410, 5308405, 10616810, 20171939, 40343878, 100859695, 201719390]

約数ペア:

[(1, 201719390), (2, 100859695), (5, 40343878), (10, 20171939), (19, 10616810), (38, 5308405), (79, 2553410), (89, 2266510), (95, 2123362), (151, 1335890), (158, 1276705), (178, 1133255), (190, 1061681), (302, 667945), (395, 510682), (445, 453302), (755, 267178), (790, 255341), (890, 226651), (1501, 134390), (1510, 133589), (1691, 119290), (2869, 70310), (3002, 67195), (3382, 59645), (5738, 35155), (7031, 28690), (7505, 26878), (8455, 23858), (11929, 16910), (13439, 15010), (14062, 14345)]