21233355

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:572

約数の個数: 64

約数和(自身を含む): 42094080

約数和(自身を除く): 20860725

約数列:

[1, 3, 5, 11, 13, 15, 19, 33, 39, 55, 57, 65, 95, 143, 165, 195, 209, 247, 285, 429, 521, 627, 715, 741, 1045, 1235, 1563, 2145, 2605, 2717, 3135, 3705, 5731, 6773, 7815, 8151, 9899, 13585, 17193, 20319, 28655, 29697, 33865, 40755, 49495, 74503, 85965, 101595, 108889, 128687, 148485, 223509, 326667, 372515, 386061, 544445, 643435, 1117545, 1415557, 1633335, 1930305, 4246671, 7077785, 21233355]

約数ペア:

[(1, 21233355), (3, 7077785), (5, 4246671), (11, 1930305), (13, 1633335), (15, 1415557), (19, 1117545), (33, 643435), (39, 544445), (55, 386061), (57, 372515), (65, 326667), (95, 223509), (143, 148485), (165, 128687), (195, 108889), (209, 101595), (247, 85965), (285, 74503), (429, 49495), (521, 40755), (627, 33865), (715, 29697), (741, 28655), (1045, 20319), (1235, 17193), (1563, 13585), (2145, 9899), (2605, 8151), (2717, 7815), (3135, 6773), (3705, 5731)]