19404016

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:158

約数の個数: 80

約数和(自身を含む): 42854400

約数和(自身を除く): 23450384

約数列:

[1, 2, 4, 8, 16, 19, 29, 31, 38, 58, 62, 71, 76, 116, 124, 142, 152, 232, 248, 284, 304, 464, 496, 551, 568, 589, 899, 1102, 1136, 1178, 1349, 1798, 2059, 2201, 2204, 2356, 2698, 3596, 4118, 4402, 4408, 4712, 5396, 7192, 8236, 8804, 8816, 9424, 10792, 14384, 16472, 17081, 17608, 21584, 32944, 34162, 35216, 39121, 41819, 63829, 68324, 78242, 83638, 127658, 136648, 156484, 167276, 255316, 273296, 312968, 334552, 510632, 625936, 669104, 1021264, 1212751, 2425502, 4851004, 9702008, 19404016]

約数ペア:

[(1, 19404016), (2, 9702008), (4, 4851004), (8, 2425502), (16, 1212751), (19, 1021264), (29, 669104), (31, 625936), (38, 510632), (58, 334552), (62, 312968), (71, 273296), (76, 255316), (116, 167276), (124, 156484), (142, 136648), (152, 127658), (232, 83638), (248, 78242), (284, 68324), (304, 63829), (464, 41819), (496, 39121), (551, 35216), (568, 34162), (589, 32944), (899, 21584), (1102, 17608), (1136, 17081), (1178, 16472), (1349, 14384), (1798, 10792), (2059, 9424), (2201, 8816), (2204, 8804), (2356, 8236), (2698, 7192), (3596, 5396), (4118, 4712), (4402, 4408)]