161960720

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{27733}}^1$

素因数の和:27819

約数の個数: 40

約数和(自身を含む): 381730776

約数和(自身を除く): 219770056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 27733, 55466, 110932, 138665, 221864, 277330, 443728, 554660, 1109320, 2024509, 2218640, 4049018, 8098036, 10122545, 16196072, 20245090, 32392144, 40490180, 80980360, 161960720]

約数ペア:

[(1, 161960720), (2, 80980360), (4, 40490180), (5, 32392144), (8, 20245090), (10, 16196072), (16, 10122545), (20, 8098036), (40, 4049018), (73, 2218640), (80, 2024509), (146, 1109320), (292, 554660), (365, 443728), (584, 277330), (730, 221864), (1168, 138665), (1460, 110932), (2920, 55466), (5840, 27733)]