21731535

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3631}}^1$

素因数の和:3668

約数の個数: 48

約数和(自身を含む): 45327360

約数和(自身を除く): 23595825

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3631, 5985, 10893, 18155, 25417, 32679, 54465, 68989, 76251, 127085, 163395, 206967, 228753, 344945, 381255, 482923, 620901, 1034835, 1143765, 1448769, 2414615, 3104505, 4346307, 7243845, 21731535]

約数ペア:

[(1, 21731535), (3, 7243845), (5, 4346307), (7, 3104505), (9, 2414615), (15, 1448769), (19, 1143765), (21, 1034835), (35, 620901), (45, 482923), (57, 381255), (63, 344945), (95, 228753), (105, 206967), (133, 163395), (171, 127085), (285, 76251), (315, 68989), (399, 54465), (665, 32679), (855, 25417), (1197, 18155), (1995, 10893), (3631, 5985)]