20120178

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 45868032

約数和(自身を除く): 25747854

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 53, 62, 78, 93, 106, 157, 159, 186, 314, 318, 403, 471, 689, 806, 942, 1209, 1378, 1643, 2041, 2067, 2418, 3286, 4082, 4134, 4867, 4929, 6123, 8321, 9734, 9858, 12246, 14601, 16642, 21359, 24963, 29202, 42718, 49926, 63271, 64077, 108173, 126542, 128154, 189813, 216346, 257951, 324519, 379626, 515902, 649038, 773853, 1547706, 3353363, 6706726, 10060089, 20120178]

約数ペア:

[(1, 20120178), (2, 10060089), (3, 6706726), (6, 3353363), (13, 1547706), (26, 773853), (31, 649038), (39, 515902), (53, 379626), (62, 324519), (78, 257951), (93, 216346), (106, 189813), (157, 128154), (159, 126542), (186, 108173), (314, 64077), (318, 63271), (403, 49926), (471, 42718), (689, 29202), (806, 24963), (942, 21359), (1209, 16642), (1378, 14601), (1643, 12246), (2041, 9858), (2067, 9734), (2418, 8321), (3286, 6123), (4082, 4929), (4134, 4867)]