217070685

素因数分解:

$3^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:551

約数の個数: 72

約数和(自身を含む): 421588440

約数和(自身を除く): 204517755

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 509, 585, 729, 1053, 1215, 1527, 1755, 2187, 2545, 3159, 3645, 4581, 5265, 6561, 6617, 7635, 9477, 10935, 13743, 15795, 19851, 22905, 28431, 32805, 33085, 41229, 47385, 59553, 68715, 85293, 99255, 123687, 142155, 178659, 206145, 297765, 371061, 426465, 535977, 618435, 893295, 1113183, 1607931, 1855305, 2679885, 3339549, 4823793, 5565915, 8039655, 14471379, 16697745, 24118965, 43414137, 72356895, 217070685]

約数ペア:

[(1, 217070685), (3, 72356895), (5, 43414137), (9, 24118965), (13, 16697745), (15, 14471379), (27, 8039655), (39, 5565915), (45, 4823793), (65, 3339549), (81, 2679885), (117, 1855305), (135, 1607931), (195, 1113183), (243, 893295), (351, 618435), (405, 535977), (509, 426465), (585, 371061), (729, 297765), (1053, 206145), (1215, 178659), (1527, 142155), (1755, 123687), (2187, 99255), (2545, 85293), (3159, 68715), (3645, 59553), (4581, 47385), (5265, 41229), (6561, 33085), (6617, 32805), (7635, 28431), (9477, 22905), (10935, 19851), (13743, 15795)]