18970588

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 43451520

約数和(自身を除く): 24480932

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 52, 76, 91, 133, 169, 182, 211, 247, 266, 338, 364, 422, 494, 532, 676, 844, 988, 1183, 1477, 1729, 2366, 2743, 2954, 3211, 3458, 4009, 4732, 5486, 5908, 6422, 6916, 8018, 10972, 12844, 16036, 19201, 22477, 28063, 35659, 38402, 44954, 52117, 56126, 71318, 76804, 89908, 104234, 112252, 142636, 208468, 249613, 364819, 499226, 677521, 729638, 998452, 1355042, 1459276, 2710084, 4742647, 9485294, 18970588]

約数ペア:

[(1, 18970588), (2, 9485294), (4, 4742647), (7, 2710084), (13, 1459276), (14, 1355042), (19, 998452), (26, 729638), (28, 677521), (38, 499226), (52, 364819), (76, 249613), (91, 208468), (133, 142636), (169, 112252), (182, 104234), (211, 89908), (247, 76804), (266, 71318), (338, 56126), (364, 52117), (422, 44954), (494, 38402), (532, 35659), (676, 28063), (844, 22477), (988, 19201), (1183, 16036), (1477, 12844), (1729, 10972), (2366, 8018), (2743, 6916), (2954, 6422), (3211, 5908), (3458, 5486), (4009, 4732)]