21701325

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 38400320

約数和(自身を除く): 16698995

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 97, 157, 285, 291, 471, 475, 485, 785, 1425, 1455, 1843, 2355, 2425, 2983, 3925, 5529, 7275, 8949, 9215, 11775, 14915, 15229, 27645, 44745, 45687, 46075, 74575, 76145, 138225, 223725, 228435, 289351, 380725, 868053, 1142175, 1446755, 4340265, 7233775, 21701325]

約数ペア:

[(1, 21701325), (3, 7233775), (5, 4340265), (15, 1446755), (19, 1142175), (25, 868053), (57, 380725), (75, 289351), (95, 228435), (97, 223725), (157, 138225), (285, 76145), (291, 74575), (471, 46075), (475, 45687), (485, 44745), (785, 27645), (1425, 15229), (1455, 14915), (1843, 11775), (2355, 9215), (2425, 8949), (2983, 7275), (3925, 5529)]