20892195

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:177

約数の個数: 64

約数和(自身を含む): 39283200

約数和(自身を除く): 18391005

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 59, 61, 129, 135, 177, 183, 215, 295, 305, 387, 531, 549, 645, 885, 915, 1161, 1593, 1647, 1935, 2537, 2623, 2655, 2745, 3599, 5805, 7611, 7869, 7965, 8235, 10797, 12685, 13115, 17995, 22833, 23607, 32391, 38055, 39345, 53985, 68499, 70821, 97173, 114165, 118035, 154757, 161955, 342495, 354105, 464271, 485865, 773785, 1392813, 2321355, 4178439, 6964065, 20892195]

約数ペア:

[(1, 20892195), (3, 6964065), (5, 4178439), (9, 2321355), (15, 1392813), (27, 773785), (43, 485865), (45, 464271), (59, 354105), (61, 342495), (129, 161955), (135, 154757), (177, 118035), (183, 114165), (215, 97173), (295, 70821), (305, 68499), (387, 53985), (531, 39345), (549, 38055), (645, 32391), (885, 23607), (915, 22833), (1161, 17995), (1593, 13115), (1647, 12685), (1935, 10797), (2537, 8235), (2623, 7965), (2655, 7869), (2745, 7611), (3599, 5805)]