19812884

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 44271360

約数和(自身を除く): 24458476

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 53, 79, 91, 106, 158, 169, 182, 212, 316, 338, 364, 371, 553, 676, 689, 742, 1027, 1106, 1183, 1378, 1484, 2054, 2212, 2366, 2756, 4108, 4187, 4732, 4823, 7189, 8374, 8957, 9646, 13351, 14378, 16748, 17914, 19292, 26702, 28756, 29309, 35828, 53404, 54431, 58618, 62699, 93457, 108862, 117236, 125398, 186914, 217724, 250796, 373828, 381017, 707603, 762034, 1415206, 1524068, 2830412, 4953221, 9906442, 19812884]

約数ペア:

[(1, 19812884), (2, 9906442), (4, 4953221), (7, 2830412), (13, 1524068), (14, 1415206), (26, 762034), (28, 707603), (52, 381017), (53, 373828), (79, 250796), (91, 217724), (106, 186914), (158, 125398), (169, 117236), (182, 108862), (212, 93457), (316, 62699), (338, 58618), (364, 54431), (371, 53404), (553, 35828), (676, 29309), (689, 28756), (742, 26702), (1027, 19292), (1106, 17914), (1183, 16748), (1378, 14378), (1484, 13351), (2054, 9646), (2212, 8957), (2366, 8374), (2756, 7189), (4108, 4823), (4187, 4732)]