19800378

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{283}}^1$

素因数の和:340

約数の個数: 72

約数和(自身を含む): 48645792

約数和(自身を除く): 28845414

約数列:

[1, 2, 3, 6, 9, 13, 18, 23, 26, 39, 46, 69, 78, 117, 138, 169, 207, 234, 283, 299, 338, 414, 507, 566, 598, 849, 897, 1014, 1521, 1698, 1794, 2547, 2691, 3042, 3679, 3887, 5094, 5382, 6509, 7358, 7774, 11037, 11661, 13018, 19527, 22074, 23322, 33111, 34983, 39054, 47827, 58581, 66222, 69966, 84617, 95654, 117162, 143481, 169234, 253851, 286962, 430443, 507702, 761553, 860886, 1100021, 1523106, 2200042, 3300063, 6600126, 9900189, 19800378]

約数ペア:

[(1, 19800378), (2, 9900189), (3, 6600126), (6, 3300063), (9, 2200042), (13, 1523106), (18, 1100021), (23, 860886), (26, 761553), (39, 507702), (46, 430443), (69, 286962), (78, 253851), (117, 169234), (138, 143481), (169, 117162), (207, 95654), (234, 84617), (283, 69966), (299, 66222), (338, 58581), (414, 47827), (507, 39054), (566, 34983), (598, 33111), (849, 23322), (897, 22074), (1014, 19527), (1521, 13018), (1698, 11661), (1794, 11037), (2547, 7774), (2691, 7358), (3042, 6509), (3679, 5382), (3887, 5094)]