19406775

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 35140608

約数和(自身を除く): 15733833

約数列:

[1, 3, 5, 15, 17, 25, 31, 51, 75, 85, 93, 155, 255, 425, 465, 491, 527, 775, 1275, 1473, 1581, 2325, 2455, 2635, 7365, 7905, 8347, 12275, 13175, 15221, 25041, 36825, 39525, 41735, 45663, 76105, 125205, 208675, 228315, 258757, 380525, 626025, 776271, 1141575, 1293785, 3881355, 6468925, 19406775]

約数ペア:

[(1, 19406775), (3, 6468925), (5, 3881355), (15, 1293785), (17, 1141575), (25, 776271), (31, 626025), (51, 380525), (75, 258757), (85, 228315), (93, 208675), (155, 125205), (255, 76105), (425, 45663), (465, 41735), (491, 39525), (527, 36825), (775, 25041), (1275, 15221), (1473, 13175), (1581, 12275), (2325, 8347), (2455, 7905), (2635, 7365)]