2907990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 7675200

約数和(自身を除く): 4767210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 79, 90, 158, 237, 395, 409, 474, 711, 790, 818, 1185, 1227, 1422, 2045, 2370, 2454, 3555, 3681, 4090, 6135, 7110, 7362, 12270, 18405, 32311, 36810, 64622, 96933, 161555, 193866, 290799, 323110, 484665, 581598, 969330, 1453995, 2907990]

約数ペア:

[(1, 2907990), (2, 1453995), (3, 969330), (5, 581598), (6, 484665), (9, 323110), (10, 290799), (15, 193866), (18, 161555), (30, 96933), (45, 64622), (79, 36810), (90, 32311), (158, 18405), (237, 12270), (395, 7362), (409, 7110), (474, 6135), (711, 4090), (790, 3681), (818, 3555), (1185, 2454), (1227, 2370), (1422, 2045)]