18757908

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 51597000

約数和(自身を除く): 32839092

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 149, 156, 234, 269, 298, 447, 468, 538, 596, 807, 894, 1076, 1341, 1614, 1788, 1937, 2421, 2682, 3228, 3497, 3874, 4842, 5364, 5811, 6994, 7748, 9684, 10491, 11622, 13988, 17433, 20982, 23244, 31473, 34866, 40081, 41964, 62946, 69732, 80162, 120243, 125892, 160324, 240486, 360729, 480972, 521053, 721458, 1042106, 1442916, 1563159, 2084212, 3126318, 4689477, 6252636, 9378954, 18757908]

約数ペア:

[(1, 18757908), (2, 9378954), (3, 6252636), (4, 4689477), (6, 3126318), (9, 2084212), (12, 1563159), (13, 1442916), (18, 1042106), (26, 721458), (36, 521053), (39, 480972), (52, 360729), (78, 240486), (117, 160324), (149, 125892), (156, 120243), (234, 80162), (269, 69732), (298, 62946), (447, 41964), (468, 40081), (538, 34866), (596, 31473), (807, 23244), (894, 20982), (1076, 17433), (1341, 13988), (1614, 11622), (1788, 10491), (1937, 9684), (2421, 7748), (2682, 6994), (3228, 5811), (3497, 5364), (3874, 4842)]