19859925

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 35533440

約数和(自身を除く): 15673515

約数列:

[1, 3, 5, 15, 23, 25, 29, 69, 75, 87, 115, 145, 345, 397, 435, 575, 667, 725, 1191, 1725, 1985, 2001, 2175, 3335, 5955, 9131, 9925, 10005, 11513, 16675, 27393, 29775, 34539, 45655, 50025, 57565, 136965, 172695, 228275, 264799, 287825, 684825, 794397, 863475, 1323995, 3971985, 6619975, 19859925]

約数ペア:

[(1, 19859925), (3, 6619975), (5, 3971985), (15, 1323995), (23, 863475), (25, 794397), (29, 684825), (69, 287825), (75, 264799), (87, 228275), (115, 172695), (145, 136965), (345, 57565), (397, 50025), (435, 45655), (575, 34539), (667, 29775), (725, 27393), (1191, 16675), (1725, 11513), (1985, 10005), (2001, 9925), (2175, 9131), (3335, 5955)]