20278395

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 37346400

約数和(自身を除く): 17068005

約数列:

[1, 3, 5, 9, 15, 29, 41, 45, 87, 123, 145, 205, 261, 369, 379, 435, 615, 1137, 1189, 1305, 1845, 1895, 3411, 3567, 5685, 5945, 10701, 10991, 15539, 17055, 17835, 32973, 46617, 53505, 54955, 77695, 98919, 139851, 164865, 233085, 450631, 494595, 699255, 1351893, 2253155, 4055679, 6759465, 20278395]

約数ペア:

[(1, 20278395), (3, 6759465), (5, 4055679), (9, 2253155), (15, 1351893), (29, 699255), (41, 494595), (45, 450631), (87, 233085), (123, 164865), (145, 139851), (205, 98919), (261, 77695), (369, 54955), (379, 53505), (435, 46617), (615, 32973), (1137, 17835), (1189, 17055), (1305, 15539), (1845, 10991), (1895, 10701), (3411, 5945), (3567, 5685)]