405421420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1\times {\mathrm{571}}^1$

素因数の和:982

約数の個数: 48

約数和(自身を含む): 862557696

約数和(自身を除く): 457136276

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 271, 524, 542, 571, 655, 1084, 1142, 1310, 1355, 2284, 2620, 2710, 2855, 5420, 5710, 11420, 35501, 71002, 74801, 142004, 149602, 154741, 177505, 299204, 309482, 355010, 374005, 618964, 710020, 748010, 773705, 1496020, 1547410, 3094820, 20271071, 40542142, 81084284, 101355355, 202710710, 405421420]

約数ペア:

[(1, 405421420), (2, 202710710), (4, 101355355), (5, 81084284), (10, 40542142), (20, 20271071), (131, 3094820), (262, 1547410), (271, 1496020), (524, 773705), (542, 748010), (571, 710020), (655, 618964), (1084, 374005), (1142, 355010), (1310, 309482), (1355, 299204), (2284, 177505), (2620, 154741), (2710, 149602), (2855, 142004), (5420, 74801), (5710, 71002), (11420, 35501)]