21697396

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{3571}}^1$

素因数の和:3620

約数の個数: 36

約数和(自身を含む): 45607296

約数和(自身を除く): 23909900

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 3571, 6076, 7142, 14284, 24997, 49994, 99988, 110701, 174979, 221402, 349958, 442804, 699916, 774907, 1549814, 3099628, 5424349, 10848698, 21697396]

約数ペア:

[(1, 21697396), (2, 10848698), (4, 5424349), (7, 3099628), (14, 1549814), (28, 774907), (31, 699916), (49, 442804), (62, 349958), (98, 221402), (124, 174979), (196, 110701), (217, 99988), (434, 49994), (868, 24997), (1519, 14284), (3038, 7142), (3571, 6076)]