81779860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7759}}^1$

素因数の和:7816

約数の個数: 48

約数和(自身を含む): 187729920

約数和(自身を除く): 105950060

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 2108, 2635, 5270, 7759, 10540, 15518, 31036, 38795, 77590, 131903, 155180, 240529, 263806, 481058, 527612, 659515, 962116, 1202645, 1319030, 2405290, 2638060, 4088993, 4810580, 8177986, 16355972, 20444965, 40889930, 81779860]

約数ペア:

[(1, 81779860), (2, 40889930), (4, 20444965), (5, 16355972), (10, 8177986), (17, 4810580), (20, 4088993), (31, 2638060), (34, 2405290), (62, 1319030), (68, 1202645), (85, 962116), (124, 659515), (155, 527612), (170, 481058), (310, 263806), (340, 240529), (527, 155180), (620, 131903), (1054, 77590), (2108, 38795), (2635, 31036), (5270, 15518), (7759, 10540)]