21676815

素因数分解:

$3^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:355

約数の個数: 56

約数和(自身を含む): 41184240

約数和(自身を除く): 19507425

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 243, 285, 313, 405, 513, 729, 855, 939, 1215, 1539, 1565, 2565, 2817, 3645, 4617, 4695, 5947, 7695, 8451, 13851, 14085, 17841, 23085, 25353, 29735, 42255, 53523, 69255, 76059, 89205, 126765, 160569, 228177, 267615, 380295, 481707, 802845, 1140885, 1445121, 2408535, 4335363, 7225605, 21676815]

約数ペア:

[(1, 21676815), (3, 7225605), (5, 4335363), (9, 2408535), (15, 1445121), (19, 1140885), (27, 802845), (45, 481707), (57, 380295), (81, 267615), (95, 228177), (135, 160569), (171, 126765), (243, 89205), (285, 76059), (313, 69255), (405, 53523), (513, 42255), (729, 29735), (855, 25353), (939, 23085), (1215, 17841), (1539, 14085), (1565, 13851), (2565, 8451), (2817, 7695), (3645, 5947), (4617, 4695)]