21425430

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{401}}^1$

素因数の和:561

約数の個数: 64

約数和(自身を含む): 55919808

約数和(自身を除く): 34494378

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 137, 195, 274, 390, 401, 411, 685, 802, 822, 1203, 1370, 1781, 2005, 2055, 2406, 3562, 4010, 4110, 5213, 5343, 6015, 8905, 10426, 10686, 12030, 15639, 17810, 26065, 26715, 31278, 52130, 53430, 54937, 78195, 109874, 156390, 164811, 274685, 329622, 549370, 714181, 824055, 1428362, 1648110, 2142543, 3570905, 4285086, 7141810, 10712715, 21425430]

約数ペア:

[(1, 21425430), (2, 10712715), (3, 7141810), (5, 4285086), (6, 3570905), (10, 2142543), (13, 1648110), (15, 1428362), (26, 824055), (30, 714181), (39, 549370), (65, 329622), (78, 274685), (130, 164811), (137, 156390), (195, 109874), (274, 78195), (390, 54937), (401, 53430), (411, 52130), (685, 31278), (802, 26715), (822, 26065), (1203, 17810), (1370, 15639), (1781, 12030), (2005, 10686), (2055, 10426), (2406, 8905), (3562, 6015), (4010, 5343), (4110, 5213)]