405805990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1567}}^1$

素因数の和:1669

約数の個数: 64

約数和(自身を含む): 812851200

約数和(自身を除く): 407045210

約数列:

[1, 2, 5, 10, 19, 29, 38, 47, 58, 94, 95, 145, 190, 235, 290, 470, 551, 893, 1102, 1363, 1567, 1786, 2726, 2755, 3134, 4465, 5510, 6815, 7835, 8930, 13630, 15670, 25897, 29773, 45443, 51794, 59546, 73649, 90886, 129485, 147298, 148865, 227215, 258970, 297730, 368245, 454430, 736490, 863417, 1399331, 1726834, 2135821, 2798662, 4271642, 4317085, 6996655, 8634170, 10679105, 13993310, 21358210, 40580599, 81161198, 202902995, 405805990]

約数ペア:

[(1, 405805990), (2, 202902995), (5, 81161198), (10, 40580599), (19, 21358210), (29, 13993310), (38, 10679105), (47, 8634170), (58, 6996655), (94, 4317085), (95, 4271642), (145, 2798662), (190, 2135821), (235, 1726834), (290, 1399331), (470, 863417), (551, 736490), (893, 454430), (1102, 368245), (1363, 297730), (1567, 258970), (1786, 227215), (2726, 148865), (2755, 147298), (3134, 129485), (4465, 90886), (5510, 73649), (6815, 59546), (7835, 51794), (8930, 45443), (13630, 29773), (15670, 25897)]