19954515

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1597}}^1$

素因数の和:1636

約数の個数: 48

約数和(自身を含む): 39349152

約数和(自身を除く): 19394637

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1597, 1785, 2499, 4165, 4791, 7985, 11179, 12495, 23955, 27149, 33537, 55895, 78253, 81447, 135745, 167685, 190043, 234759, 391265, 407235, 570129, 950215, 1173795, 1330301, 2850645, 3990903, 6651505, 19954515]

約数ペア:

[(1, 19954515), (3, 6651505), (5, 3990903), (7, 2850645), (15, 1330301), (17, 1173795), (21, 950215), (35, 570129), (49, 407235), (51, 391265), (85, 234759), (105, 190043), (119, 167685), (147, 135745), (245, 81447), (255, 78253), (357, 55895), (595, 33537), (735, 27149), (833, 23955), (1597, 12495), (1785, 11179), (2499, 7985), (4165, 4791)]