21000398516

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{1823}}^1\times {\mathrm{39451}}^1$

素因数の和:41351

約数の個数: 24

約数和(自身を含む): 37275512064

約数和(自身を除く): 16275113548

約数列:

[1, 2, 4, 73, 146, 292, 1823, 3646, 7292, 39451, 78902, 133079, 157804, 266158, 532316, 2879923, 5759846, 11519692, 71919173, 143838346, 287676692, 5250099629, 10500199258, 21000398516]

約数ペア:

[(1, 21000398516), (2, 10500199258), (4, 5250099629), (73, 287676692), (146, 143838346), (292, 71919173), (1823, 11519692), (3646, 5759846), (7292, 2879923), (39451, 532316), (78902, 266158), (133079, 157804)]