13199180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:450

約数の個数: 48

約数和(自身を含む): 29164800

約数和(自身を除く): 15965620

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 349, 610, 620, 698, 1220, 1396, 1745, 1891, 3490, 3782, 6980, 7564, 9455, 10819, 18910, 21289, 21638, 37820, 42578, 43276, 54095, 85156, 106445, 108190, 212890, 216380, 425780, 659959, 1319918, 2639836, 3299795, 6599590, 13199180]

約数ペア:

[(1, 13199180), (2, 6599590), (4, 3299795), (5, 2639836), (10, 1319918), (20, 659959), (31, 425780), (61, 216380), (62, 212890), (122, 108190), (124, 106445), (155, 85156), (244, 54095), (305, 43276), (310, 42578), (349, 37820), (610, 21638), (620, 21289), (698, 18910), (1220, 10819), (1396, 9455), (1745, 7564), (1891, 6980), (3490, 3782)]