21284910

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2543}}^1$

素因数の和:2590

約数の個数: 64

約数和(自身を含む): 58613760

約数和(自身を除く): 37328850

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 31, 45, 54, 62, 90, 93, 135, 155, 186, 270, 279, 310, 465, 558, 837, 930, 1395, 1674, 2543, 2790, 4185, 5086, 7629, 8370, 12715, 15258, 22887, 25430, 38145, 45774, 68661, 76290, 78833, 114435, 137322, 157666, 228870, 236499, 343305, 394165, 472998, 686610, 709497, 788330, 1182495, 1418994, 2128491, 2364990, 3547485, 4256982, 7094970, 10642455, 21284910]

約数ペア:

[(1, 21284910), (2, 10642455), (3, 7094970), (5, 4256982), (6, 3547485), (9, 2364990), (10, 2128491), (15, 1418994), (18, 1182495), (27, 788330), (30, 709497), (31, 686610), (45, 472998), (54, 394165), (62, 343305), (90, 236499), (93, 228870), (135, 157666), (155, 137322), (186, 114435), (270, 78833), (279, 76290), (310, 68661), (465, 45774), (558, 38145), (837, 25430), (930, 22887), (1395, 15258), (1674, 12715), (2543, 8370), (2790, 7629), (4185, 5086)]