18877430

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:381

約数の個数: 64

約数和(自身を含む): 40981248

約数和(自身を除く): 22103818

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 43, 55, 65, 86, 110, 130, 143, 215, 286, 307, 430, 473, 559, 614, 715, 946, 1118, 1430, 1535, 2365, 2795, 3070, 3377, 3991, 4730, 5590, 6149, 6754, 7982, 12298, 13201, 16885, 19955, 26402, 30745, 33770, 39910, 43901, 61490, 66005, 87802, 132010, 145211, 171613, 219505, 290422, 343226, 439010, 726055, 858065, 1452110, 1716130, 1887743, 3775486, 9438715, 18877430]

約数ペア:

[(1, 18877430), (2, 9438715), (5, 3775486), (10, 1887743), (11, 1716130), (13, 1452110), (22, 858065), (26, 726055), (43, 439010), (55, 343226), (65, 290422), (86, 219505), (110, 171613), (130, 145211), (143, 132010), (215, 87802), (286, 66005), (307, 61490), (430, 43901), (473, 39910), (559, 33770), (614, 30745), (715, 26402), (946, 19955), (1118, 16885), (1430, 13201), (1535, 12298), (2365, 7982), (2795, 6754), (3070, 6149), (3377, 5590), (3991, 4730)]