19938490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 42964992

約数和(自身を除く): 23026502

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 73, 110, 130, 143, 146, 191, 286, 365, 382, 715, 730, 803, 949, 955, 1430, 1606, 1898, 1910, 2101, 2483, 4015, 4202, 4745, 4966, 8030, 9490, 10439, 10505, 12415, 13943, 20878, 21010, 24830, 27313, 27886, 52195, 54626, 69715, 104390, 136565, 139430, 153373, 181259, 273130, 306746, 362518, 766865, 906295, 1533730, 1812590, 1993849, 3987698, 9969245, 19938490]

約数ペア:

[(1, 19938490), (2, 9969245), (5, 3987698), (10, 1993849), (11, 1812590), (13, 1533730), (22, 906295), (26, 766865), (55, 362518), (65, 306746), (73, 273130), (110, 181259), (130, 153373), (143, 139430), (146, 136565), (191, 104390), (286, 69715), (365, 54626), (382, 52195), (715, 27886), (730, 27313), (803, 24830), (949, 21010), (955, 20878), (1430, 13943), (1606, 12415), (1898, 10505), (1910, 10439), (2101, 9490), (2483, 8030), (4015, 4966), (4202, 4745)]