18512728

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{283}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 40793760

約数和(自身を除く): 22281032

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 37, 52, 68, 74, 104, 136, 148, 221, 283, 296, 442, 481, 566, 629, 884, 962, 1132, 1258, 1768, 1924, 2264, 2516, 3679, 3848, 4811, 5032, 7358, 8177, 9622, 10471, 14716, 16354, 19244, 20942, 29432, 32708, 38488, 41884, 62543, 65416, 83768, 125086, 136123, 178007, 250172, 272246, 356014, 500344, 544492, 712028, 1088984, 1424056, 2314091, 4628182, 9256364, 18512728]

約数ペア:

[(1, 18512728), (2, 9256364), (4, 4628182), (8, 2314091), (13, 1424056), (17, 1088984), (26, 712028), (34, 544492), (37, 500344), (52, 356014), (68, 272246), (74, 250172), (104, 178007), (136, 136123), (148, 125086), (221, 83768), (283, 65416), (296, 62543), (442, 41884), (481, 38488), (566, 32708), (629, 29432), (884, 20942), (962, 19244), (1132, 16354), (1258, 14716), (1768, 10471), (1924, 9622), (2264, 8177), (2516, 7358), (3679, 5032), (3848, 4811)]