21697695

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 18636417

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 113, 153, 251, 255, 339, 565, 753, 765, 1017, 1255, 1695, 1921, 2259, 3765, 4267, 5085, 5763, 9605, 11295, 12801, 17289, 21335, 28363, 28815, 38403, 64005, 85089, 86445, 141815, 192015, 255267, 425445, 482171, 1276335, 1446513, 2410855, 4339539, 7232565, 21697695]

約数ペア:

[(1, 21697695), (3, 7232565), (5, 4339539), (9, 2410855), (15, 1446513), (17, 1276335), (45, 482171), (51, 425445), (85, 255267), (113, 192015), (153, 141815), (251, 86445), (255, 85089), (339, 64005), (565, 38403), (753, 28815), (765, 28363), (1017, 21335), (1255, 17289), (1695, 12801), (1921, 11295), (2259, 9605), (3765, 5763), (4267, 5085)]