20997522

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4273}}^1$

素因数の和:4304

約数の個数: 64

約数和(自身を含む): 57442560

約数和(自身を除く): 36445038

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 63, 78, 91, 117, 126, 182, 189, 234, 273, 351, 378, 546, 702, 819, 1638, 2457, 4273, 4914, 8546, 12819, 25638, 29911, 38457, 55549, 59822, 76914, 89733, 111098, 115371, 166647, 179466, 230742, 269199, 333294, 388843, 499941, 538398, 777686, 807597, 999882, 1166529, 1499823, 1615194, 2333058, 2999646, 3499587, 6999174, 10498761, 20997522]

約数ペア:

[(1, 20997522), (2, 10498761), (3, 6999174), (6, 3499587), (7, 2999646), (9, 2333058), (13, 1615194), (14, 1499823), (18, 1166529), (21, 999882), (26, 807597), (27, 777686), (39, 538398), (42, 499941), (54, 388843), (63, 333294), (78, 269199), (91, 230742), (117, 179466), (126, 166647), (182, 115371), (189, 111098), (234, 89733), (273, 76914), (351, 59822), (378, 55549), (546, 38457), (702, 29911), (819, 25638), (1638, 12819), (2457, 8546), (4273, 4914)]