171771920

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:592

約数の個数: 80

約数和(自身を含む): 411818880

約数和(自身を除く): 240046960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 73, 80, 134, 146, 268, 292, 335, 365, 439, 536, 584, 670, 730, 878, 1072, 1168, 1340, 1460, 1756, 2195, 2680, 2920, 3512, 4390, 4891, 5360, 5840, 7024, 8780, 9782, 17560, 19564, 24455, 29413, 32047, 35120, 39128, 48910, 58826, 64094, 78256, 97820, 117652, 128188, 147065, 160235, 195640, 235304, 256376, 294130, 320470, 391280, 470608, 512752, 588260, 640940, 1176520, 1281880, 2147149, 2353040, 2563760, 4294298, 8588596, 10735745, 17177192, 21471490, 34354384, 42942980, 85885960, 171771920]

約数ペア:

[(1, 171771920), (2, 85885960), (4, 42942980), (5, 34354384), (8, 21471490), (10, 17177192), (16, 10735745), (20, 8588596), (40, 4294298), (67, 2563760), (73, 2353040), (80, 2147149), (134, 1281880), (146, 1176520), (268, 640940), (292, 588260), (335, 512752), (365, 470608), (439, 391280), (536, 320470), (584, 294130), (670, 256376), (730, 235304), (878, 195640), (1072, 160235), (1168, 147065), (1340, 128188), (1460, 117652), (1756, 97820), (2195, 78256), (2680, 64094), (2920, 58826), (3512, 48910), (4390, 39128), (4891, 35120), (5360, 32047), (5840, 29413), (7024, 24455), (8780, 19564), (9782, 17560)]