646896003

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 978186240

約数和(自身を除く): 331290237

約数列:

[1, 3, 13, 31, 39, 79, 93, 169, 237, 403, 507, 521, 1027, 1209, 1563, 2449, 3081, 5239, 6773, 7347, 13351, 15717, 16151, 20319, 31837, 40053, 41159, 48453, 88049, 95511, 123477, 209963, 264147, 413881, 535067, 629889, 1241643, 1275929, 1605201, 2729519, 3827787, 6955871, 8188557, 16587077, 20867613, 49761231, 215632001, 646896003]

約数ペア:

[(1, 646896003), (3, 215632001), (13, 49761231), (31, 20867613), (39, 16587077), (79, 8188557), (93, 6955871), (169, 3827787), (237, 2729519), (403, 1605201), (507, 1275929), (521, 1241643), (1027, 629889), (1209, 535067), (1563, 413881), (2449, 264147), (3081, 209963), (5239, 123477), (6773, 95511), (7347, 88049), (13351, 48453), (15717, 41159), (16151, 40053), (20319, 31837)]