31999140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{457}}^1$

素因数の和:861

約数の個数: 72

約数和(自身を含む): 97526520

約数和(自身を除く): 65527380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 457, 778, 914, 1167, 1371, 1556, 1828, 1945, 2285, 2334, 2742, 3501, 3890, 4113, 4570, 4668, 5484, 5835, 6855, 7002, 7780, 8226, 9140, 11670, 13710, 14004, 16452, 17505, 20565, 23340, 27420, 35010, 41130, 70020, 82260, 177773, 355546, 533319, 711092, 888865, 1066638, 1599957, 1777730, 2133276, 2666595, 3199914, 3555460, 5333190, 6399828, 7999785, 10666380, 15999570, 31999140]

約数ペア:

[(1, 31999140), (2, 15999570), (3, 10666380), (4, 7999785), (5, 6399828), (6, 5333190), (9, 3555460), (10, 3199914), (12, 2666595), (15, 2133276), (18, 1777730), (20, 1599957), (30, 1066638), (36, 888865), (45, 711092), (60, 533319), (90, 355546), (180, 177773), (389, 82260), (457, 70020), (778, 41130), (914, 35010), (1167, 27420), (1371, 23340), (1556, 20565), (1828, 17505), (1945, 16452), (2285, 14004), (2334, 13710), (2742, 11670), (3501, 9140), (3890, 8226), (4113, 7780), (4570, 7002), (4668, 6855), (5484, 5835)]