21817947

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 32313600

約数和(自身を除く): 10495653

約数列:

[1, 3, 19, 29, 57, 67, 87, 197, 201, 551, 591, 1273, 1653, 1943, 3743, 3819, 5713, 5829, 11229, 13199, 17139, 36917, 39597, 108547, 110751, 250781, 325641, 382771, 752343, 1148313, 7272649, 21817947]

約数ペア:

[(1, 21817947), (3, 7272649), (19, 1148313), (29, 752343), (57, 382771), (67, 325641), (87, 250781), (197, 110751), (201, 108547), (551, 39597), (591, 36917), (1273, 17139), (1653, 13199), (1943, 11229), (3743, 5829), (3819, 5713)]