21911835

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 39697920

約数和(自身を除く): 17786085

約数列:

[1, 3, 5, 11, 15, 33, 41, 55, 79, 123, 165, 205, 237, 395, 451, 615, 869, 1185, 1353, 1681, 2255, 2607, 3239, 4345, 5043, 6765, 8405, 9717, 13035, 16195, 18491, 25215, 35629, 48585, 55473, 92455, 106887, 132799, 178145, 277365, 398397, 534435, 663995, 1460789, 1991985, 4382367, 7303945, 21911835]

約数ペア:

[(1, 21911835), (3, 7303945), (5, 4382367), (11, 1991985), (15, 1460789), (33, 663995), (41, 534435), (55, 398397), (79, 277365), (123, 178145), (165, 132799), (205, 106887), (237, 92455), (395, 55473), (451, 48585), (615, 35629), (869, 25215), (1185, 18491), (1353, 16195), (1681, 13035), (2255, 9717), (2607, 8405), (3239, 6765), (4345, 5043)]