18891730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1201}}^1$

素因数の和:1243

約数の個数: 48

約数和(自身を含む): 40286232

約数和(自身を除く): 21394502

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1201, 1210, 1430, 1573, 2402, 3146, 6005, 7865, 12010, 13211, 15613, 15730, 26422, 31226, 66055, 78065, 132110, 145321, 156130, 171743, 290642, 343486, 726605, 858715, 1453210, 1717430, 1889173, 3778346, 9445865, 18891730]

約数ペア:

[(1, 18891730), (2, 9445865), (5, 3778346), (10, 1889173), (11, 1717430), (13, 1453210), (22, 858715), (26, 726605), (55, 343486), (65, 290642), (110, 171743), (121, 156130), (130, 145321), (143, 132110), (242, 78065), (286, 66055), (605, 31226), (715, 26422), (1201, 15730), (1210, 15613), (1430, 13211), (1573, 12010), (2402, 7865), (3146, 6005)]