19724215

素因数分解:

$5^1\times 7^4\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:117

約数の個数: 40

約数和(自身を含む): 29040768

約数和(自身を除く): 9316553

約数列:

[1, 5, 7, 31, 35, 49, 53, 155, 217, 245, 265, 343, 371, 1085, 1519, 1643, 1715, 1855, 2401, 2597, 7595, 8215, 10633, 11501, 12005, 12985, 18179, 53165, 57505, 74431, 80507, 90895, 127253, 372155, 402535, 563549, 636265, 2817745, 3944843, 19724215]

約数ペア:

[(1, 19724215), (5, 3944843), (7, 2817745), (31, 636265), (35, 563549), (49, 402535), (53, 372155), (155, 127253), (217, 90895), (245, 80507), (265, 74431), (343, 57505), (371, 53165), (1085, 18179), (1519, 12985), (1643, 12005), (1715, 11501), (1855, 10633), (2401, 8215), (2597, 7595)]