1285289960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{89009}}^1$

素因数の和:89058

約数の個数: 48

約数和(自身を含む): 3052152900

約数和(自身を除く): 1766862940

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 7220, 14440, 89009, 178018, 356036, 445045, 712072, 890090, 1691171, 1780180, 3382342, 3560360, 6764684, 8455855, 13529368, 16911710, 32132249, 33823420, 64264498, 67646840, 128528996, 160661245, 257057992, 321322490, 642644980, 1285289960]

約数ペア:

[(1, 1285289960), (2, 642644980), (4, 321322490), (5, 257057992), (8, 160661245), (10, 128528996), (19, 67646840), (20, 64264498), (38, 33823420), (40, 32132249), (76, 16911710), (95, 13529368), (152, 8455855), (190, 6764684), (361, 3560360), (380, 3382342), (722, 1780180), (760, 1691171), (1444, 890090), (1805, 712072), (2888, 445045), (3610, 356036), (7220, 178018), (14440, 89009)]