31881220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{9901}}^1$

素因数の和:9940

約数の個数: 48

約数和(自身を含む): 79849728

約数和(自身を除く): 47968508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 9901, 19802, 39604, 49505, 69307, 99010, 138614, 198020, 227723, 277228, 346535, 455446, 693070, 910892, 1138615, 1386140, 1594061, 2277230, 3188122, 4554460, 6376244, 7970305, 15940610, 31881220]

約数ペア:

[(1, 31881220), (2, 15940610), (4, 7970305), (5, 6376244), (7, 4554460), (10, 3188122), (14, 2277230), (20, 1594061), (23, 1386140), (28, 1138615), (35, 910892), (46, 693070), (70, 455446), (92, 346535), (115, 277228), (140, 227723), (161, 198020), (230, 138614), (322, 99010), (460, 69307), (644, 49505), (805, 39604), (1610, 19802), (3220, 9901)]