20975904

素因数分解:

$2^5\times 3^2\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:610

約数の個数: 72

約数和(自身を含む): 60137532

約数和(自身を除く): 39161628

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 173, 288, 346, 421, 519, 692, 842, 1038, 1263, 1384, 1557, 1684, 2076, 2526, 2768, 3114, 3368, 3789, 4152, 5052, 5536, 6228, 6736, 7578, 8304, 10104, 12456, 13472, 15156, 16608, 20208, 24912, 30312, 40416, 49824, 60624, 72833, 121248, 145666, 218499, 291332, 436998, 582664, 655497, 873996, 1165328, 1310994, 1747992, 2330656, 2621988, 3495984, 5243976, 6991968, 10487952, 20975904]

約数ペア:

[(1, 20975904), (2, 10487952), (3, 6991968), (4, 5243976), (6, 3495984), (8, 2621988), (9, 2330656), (12, 1747992), (16, 1310994), (18, 1165328), (24, 873996), (32, 655497), (36, 582664), (48, 436998), (72, 291332), (96, 218499), (144, 145666), (173, 121248), (288, 72833), (346, 60624), (421, 49824), (519, 40416), (692, 30312), (842, 24912), (1038, 20208), (1263, 16608), (1384, 15156), (1557, 13472), (1684, 12456), (2076, 10104), (2526, 8304), (2768, 7578), (3114, 6736), (3368, 6228), (3789, 5536), (4152, 5052)]