1990457860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{223}}^1\times {\mathrm{283}}^1$

素因数の和:617

約数の個数: 96

約数和(自身を含む): 4488744960

約数和(自身を除く): 2498287100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 223, 283, 332, 380, 415, 446, 566, 830, 892, 1115, 1132, 1415, 1577, 1660, 2230, 2830, 3154, 4237, 4460, 5377, 5660, 6308, 7885, 8474, 10754, 15770, 16948, 18509, 21185, 21508, 23489, 26885, 31540, 37018, 42370, 46978, 53770, 63109, 74036, 84740, 92545, 93956, 107540, 117445, 126218, 185090, 234890, 252436, 315545, 351671, 370180, 446291, 469780, 631090, 703342, 892582, 1199071, 1262180, 1406684, 1758355, 1785164, 2231455, 2398142, 3516710, 4462910, 4796284, 5238047, 5995355, 7033420, 8925820, 10476094, 11990710, 20952188, 23981420, 26190235, 52380470, 99522893, 104760940, 199045786, 398091572, 497614465, 995228930, 1990457860]

約数ペア:

[(1, 1990457860), (2, 995228930), (4, 497614465), (5, 398091572), (10, 199045786), (19, 104760940), (20, 99522893), (38, 52380470), (76, 26190235), (83, 23981420), (95, 20952188), (166, 11990710), (190, 10476094), (223, 8925820), (283, 7033420), (332, 5995355), (380, 5238047), (415, 4796284), (446, 4462910), (566, 3516710), (830, 2398142), (892, 2231455), (1115, 1785164), (1132, 1758355), (1415, 1406684), (1577, 1262180), (1660, 1199071), (2230, 892582), (2830, 703342), (3154, 631090), (4237, 469780), (4460, 446291), (5377, 370180), (5660, 351671), (6308, 315545), (7885, 252436), (8474, 234890), (10754, 185090), (15770, 126218), (16948, 117445), (18509, 107540), (21185, 93956), (21508, 92545), (23489, 84740), (26885, 74036), (31540, 63109), (37018, 53770), (42370, 46978)]