81559890

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31249}}^1$

素因数の和:31291

約数の個数: 48

約数和(自身を含む): 219375000

約数和(自身を除く): 137815110

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 87, 90, 145, 174, 261, 290, 435, 522, 870, 1305, 2610, 31249, 62498, 93747, 156245, 187494, 281241, 312490, 468735, 562482, 906221, 937470, 1406205, 1812442, 2718663, 2812410, 4531105, 5437326, 8155989, 9062210, 13593315, 16311978, 27186630, 40779945, 81559890]

約数ペア:

[(1, 81559890), (2, 40779945), (3, 27186630), (5, 16311978), (6, 13593315), (9, 9062210), (10, 8155989), (15, 5437326), (18, 4531105), (29, 2812410), (30, 2718663), (45, 1812442), (58, 1406205), (87, 937470), (90, 906221), (145, 562482), (174, 468735), (261, 312490), (290, 281241), (435, 187494), (522, 156245), (870, 93747), (1305, 62498), (2610, 31249)]