8440900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 20318144

約数和(自身を除く): 11877244

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 43, 50, 52, 65, 86, 100, 130, 151, 172, 215, 260, 302, 325, 430, 559, 604, 650, 755, 860, 1075, 1118, 1300, 1510, 1963, 2150, 2236, 2795, 3020, 3775, 3926, 4300, 5590, 6493, 7550, 7852, 9815, 11180, 12986, 13975, 15100, 19630, 25972, 27950, 32465, 39260, 49075, 55900, 64930, 84409, 98150, 129860, 162325, 168818, 196300, 324650, 337636, 422045, 649300, 844090, 1688180, 2110225, 4220450, 8440900]

約数ペア:

[(1, 8440900), (2, 4220450), (4, 2110225), (5, 1688180), (10, 844090), (13, 649300), (20, 422045), (25, 337636), (26, 324650), (43, 196300), (50, 168818), (52, 162325), (65, 129860), (86, 98150), (100, 84409), (130, 64930), (151, 55900), (172, 49075), (215, 39260), (260, 32465), (302, 27950), (325, 25972), (430, 19630), (559, 15100), (604, 13975), (650, 12986), (755, 11180), (860, 9815), (1075, 7852), (1118, 7550), (1300, 6493), (1510, 5590), (1963, 4300), (2150, 3926), (2236, 3775), (2795, 3020)]