28066780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:299

約数の個数: 96

約数和(自身を含む): 72253440

約数和(自身を除く): 44186660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 31, 35, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 223, 290, 310, 406, 434, 446, 580, 620, 812, 868, 892, 899, 1015, 1085, 1115, 1561, 1798, 2030, 2170, 2230, 3122, 3596, 4060, 4340, 4460, 4495, 6244, 6293, 6467, 6913, 7805, 8990, 12586, 12934, 13826, 15610, 17980, 25172, 25868, 27652, 31220, 31465, 32335, 34565, 45269, 48391, 62930, 64670, 69130, 90538, 96782, 125860, 129340, 138260, 181076, 193564, 200477, 226345, 241955, 400954, 452690, 483910, 801908, 905380, 967820, 1002385, 1403339, 2004770, 2806678, 4009540, 5613356, 7016695, 14033390, 28066780]

約数ペア:

[(1, 28066780), (2, 14033390), (4, 7016695), (5, 5613356), (7, 4009540), (10, 2806678), (14, 2004770), (20, 1403339), (28, 1002385), (29, 967820), (31, 905380), (35, 801908), (58, 483910), (62, 452690), (70, 400954), (116, 241955), (124, 226345), (140, 200477), (145, 193564), (155, 181076), (203, 138260), (217, 129340), (223, 125860), (290, 96782), (310, 90538), (406, 69130), (434, 64670), (446, 62930), (580, 48391), (620, 45269), (812, 34565), (868, 32335), (892, 31465), (899, 31220), (1015, 27652), (1085, 25868), (1115, 25172), (1561, 17980), (1798, 15610), (2030, 13826), (2170, 12934), (2230, 12586), (3122, 8990), (3596, 7805), (4060, 6913), (4340, 6467), (4460, 6293), (4495, 6244)]