19690190

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:285

約数の個数: 48

約数和(自身を含む): 39211776

約数和(自身を除く): 19521586

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 169, 191, 305, 338, 382, 610, 793, 845, 955, 1586, 1690, 1910, 2483, 3965, 4966, 7930, 10309, 11651, 12415, 20618, 23302, 24830, 32279, 51545, 58255, 64558, 103090, 116510, 151463, 161395, 302926, 322790, 757315, 1514630, 1969019, 3938038, 9845095, 19690190]

約数ペア:

[(1, 19690190), (2, 9845095), (5, 3938038), (10, 1969019), (13, 1514630), (26, 757315), (61, 322790), (65, 302926), (122, 161395), (130, 151463), (169, 116510), (191, 103090), (305, 64558), (338, 58255), (382, 51545), (610, 32279), (793, 24830), (845, 23302), (955, 20618), (1586, 12415), (1690, 11651), (1910, 10309), (2483, 7930), (3965, 4966)]