21438688

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{953}}^1$

素因数の和:1019

約数の個数: 48

約数和(自身を含む): 45677520

約数和(自身を除く): 24238832

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 953, 1184, 1406, 1906, 2812, 3812, 5624, 7624, 11248, 15248, 18107, 22496, 30496, 35261, 36214, 70522, 72428, 141044, 144856, 282088, 289712, 564176, 579424, 669959, 1128352, 1339918, 2679836, 5359672, 10719344, 21438688]

約数ペア:

[(1, 21438688), (2, 10719344), (4, 5359672), (8, 2679836), (16, 1339918), (19, 1128352), (32, 669959), (37, 579424), (38, 564176), (74, 289712), (76, 282088), (148, 144856), (152, 141044), (296, 72428), (304, 70522), (592, 36214), (608, 35261), (703, 30496), (953, 22496), (1184, 18107), (1406, 15248), (1906, 11248), (2812, 7624), (3812, 5624)]