87003980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20047}}^1$

素因数の和:20094

約数の個数: 48

約数和(自身を含む): 215556096

約数和(自身を除く): 128552116

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 20047, 40094, 80188, 100235, 140329, 200470, 280658, 400940, 561316, 621457, 701645, 1242914, 1403290, 2485828, 2806580, 3107285, 4350199, 6214570, 8700398, 12429140, 17400796, 21750995, 43501990, 87003980]

約数ペア:

[(1, 87003980), (2, 43501990), (4, 21750995), (5, 17400796), (7, 12429140), (10, 8700398), (14, 6214570), (20, 4350199), (28, 3107285), (31, 2806580), (35, 2485828), (62, 1403290), (70, 1242914), (124, 701645), (140, 621457), (155, 561316), (217, 400940), (310, 280658), (434, 200470), (620, 140329), (868, 100235), (1085, 80188), (2170, 40094), (4340, 20047)]