20306860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4679}}^1$

素因数の和:4726

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 30012500

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, 4679, 9358, 18716, 23395, 32753, 46790, 65506, 93580, 131012, 145049, 163765, 290098, 327530, 580196, 655060, 725245, 1015343, 1450490, 2030686, 2900980, 4061372, 5076715, 10153430, 20306860]

約数ペア:

[(1, 20306860), (2, 10153430), (4, 5076715), (5, 4061372), (7, 2900980), (10, 2030686), (14, 1450490), (20, 1015343), (28, 725245), (31, 655060), (35, 580196), (62, 327530), (70, 290098), (124, 163765), (140, 145049), (155, 131012), (217, 93580), (310, 65506), (434, 46790), (620, 32753), (868, 23395), (1085, 18716), (2170, 9358), (4340, 4679)]