21368560

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3659}}^1$

素因数の和:3745

約数の個数: 40

約数和(自身を含む): 50376240

約数和(自身を除く): 29007680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3659, 5840, 7318, 14636, 18295, 29272, 36590, 58544, 73180, 146360, 267107, 292720, 534214, 1068428, 1335535, 2136856, 2671070, 4273712, 5342140, 10684280, 21368560]

約数ペア:

[(1, 21368560), (2, 10684280), (4, 5342140), (5, 4273712), (8, 2671070), (10, 2136856), (16, 1335535), (20, 1068428), (40, 534214), (73, 292720), (80, 267107), (146, 146360), (292, 73180), (365, 58544), (584, 36590), (730, 29272), (1168, 18295), (1460, 14636), (2920, 7318), (3659, 5840)]