320440925

素因数分解:

$5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 465505920

約数和(自身を除く): 145064995

約数列:

[1, 5, 7, 25, 35, 107, 109, 157, 175, 535, 545, 749, 763, 785, 1099, 2675, 2725, 3745, 3815, 3925, 5495, 11663, 16799, 17113, 18725, 19075, 27475, 58315, 81641, 83995, 85565, 117593, 119791, 291575, 408205, 419975, 427825, 587965, 598955, 1831091, 2041025, 2939825, 2994775, 9155455, 12817637, 45777275, 64088185, 320440925]

約数ペア:

[(1, 320440925), (5, 64088185), (7, 45777275), (25, 12817637), (35, 9155455), (107, 2994775), (109, 2939825), (157, 2041025), (175, 1831091), (535, 598955), (545, 587965), (749, 427825), (763, 419975), (785, 408205), (1099, 291575), (2675, 119791), (2725, 117593), (3745, 85565), (3815, 83995), (3925, 81641), (5495, 58315), (11663, 27475), (16799, 19075), (17113, 18725)]