278380425

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{859}}^1$

素因数の和:1050

約数の個数: 48

約数和(自身を含む): 479880000

約数和(自身を除く): 201499575

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 149, 435, 447, 725, 745, 859, 2175, 2235, 2577, 3725, 4295, 4321, 11175, 12885, 12963, 21475, 21605, 24911, 64425, 64815, 74733, 108025, 124555, 127991, 324075, 373665, 383973, 622775, 639955, 1868325, 1919865, 3199775, 3711739, 9599325, 11135217, 18558695, 55676085, 92793475, 278380425]

約数ペア:

[(1, 278380425), (3, 92793475), (5, 55676085), (15, 18558695), (25, 11135217), (29, 9599325), (75, 3711739), (87, 3199775), (145, 1919865), (149, 1868325), (435, 639955), (447, 622775), (725, 383973), (745, 373665), (859, 324075), (2175, 127991), (2235, 124555), (2577, 108025), (3725, 74733), (4295, 64815), (4321, 64425), (11175, 24911), (12885, 21605), (12963, 21475)]