21416175

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:553

約数の個数: 72

約数和(自身を含む): 44394480

約数和(自身を除く): 22978305

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 99, 153, 165, 187, 225, 255, 275, 425, 495, 509, 561, 765, 825, 935, 1275, 1527, 1683, 2475, 2545, 2805, 3825, 4581, 4675, 5599, 7635, 8415, 8653, 12725, 14025, 16797, 22905, 25959, 27995, 38175, 42075, 43265, 50391, 77877, 83985, 95183, 114525, 129795, 139975, 216325, 251955, 285549, 389385, 419925, 475915, 648975, 856647, 1259775, 1427745, 1946925, 2379575, 4283235, 7138725, 21416175]

約数ペア:

[(1, 21416175), (3, 7138725), (5, 4283235), (9, 2379575), (11, 1946925), (15, 1427745), (17, 1259775), (25, 856647), (33, 648975), (45, 475915), (51, 419925), (55, 389385), (75, 285549), (85, 251955), (99, 216325), (153, 139975), (165, 129795), (187, 114525), (225, 95183), (255, 83985), (275, 77877), (425, 50391), (495, 43265), (509, 42075), (561, 38175), (765, 27995), (825, 25959), (935, 22905), (1275, 16797), (1527, 14025), (1683, 12725), (2475, 8653), (2545, 8415), (2805, 7635), (3825, 5599), (4581, 4675)]