31291480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{197}}^1$

素因数の和:257

約数の個数: 96

約数和(自身を含む): 81473040

約数和(自身を除く): 50181560

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 197, 209, 220, 361, 380, 394, 418, 440, 722, 760, 788, 836, 985, 1045, 1444, 1576, 1672, 1805, 1970, 2090, 2167, 2888, 3610, 3743, 3940, 3971, 4180, 4334, 7220, 7486, 7880, 7942, 8360, 8668, 10835, 14440, 14972, 15884, 17336, 18715, 19855, 21670, 29944, 31768, 37430, 39710, 41173, 43340, 71117, 74860, 79420, 82346, 86680, 142234, 149720, 158840, 164692, 205865, 284468, 329384, 355585, 411730, 568936, 711170, 782287, 823460, 1422340, 1564574, 1646920, 2844680, 3129148, 3911435, 6258296, 7822870, 15645740, 31291480]

約数ペア:

[(1, 31291480), (2, 15645740), (4, 7822870), (5, 6258296), (8, 3911435), (10, 3129148), (11, 2844680), (19, 1646920), (20, 1564574), (22, 1422340), (38, 823460), (40, 782287), (44, 711170), (55, 568936), (76, 411730), (88, 355585), (95, 329384), (110, 284468), (152, 205865), (190, 164692), (197, 158840), (209, 149720), (220, 142234), (361, 86680), (380, 82346), (394, 79420), (418, 74860), (440, 71117), (722, 43340), (760, 41173), (788, 39710), (836, 37430), (985, 31768), (1045, 29944), (1444, 21670), (1576, 19855), (1672, 18715), (1805, 17336), (1970, 15884), (2090, 14972), (2167, 14440), (2888, 10835), (3610, 8668), (3743, 8360), (3940, 7942), (3971, 7880), (4180, 7486), (4334, 7220)]