19901628

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1049}}^1$

素因数の和:1107

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 35135172

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 31, 34, 36, 51, 62, 68, 93, 102, 124, 153, 186, 204, 279, 306, 372, 527, 558, 612, 1049, 1054, 1116, 1581, 2098, 2108, 3147, 3162, 4196, 4743, 6294, 6324, 9441, 9486, 12588, 17833, 18882, 18972, 32519, 35666, 37764, 53499, 65038, 71332, 97557, 106998, 130076, 160497, 195114, 213996, 292671, 320994, 390228, 552823, 585342, 641988, 1105646, 1170684, 1658469, 2211292, 3316938, 4975407, 6633876, 9950814, 19901628]

約数ペア:

[(1, 19901628), (2, 9950814), (3, 6633876), (4, 4975407), (6, 3316938), (9, 2211292), (12, 1658469), (17, 1170684), (18, 1105646), (31, 641988), (34, 585342), (36, 552823), (51, 390228), (62, 320994), (68, 292671), (93, 213996), (102, 195114), (124, 160497), (153, 130076), (186, 106998), (204, 97557), (279, 71332), (306, 65038), (372, 53499), (527, 37764), (558, 35666), (612, 32519), (1049, 18972), (1054, 18882), (1116, 17833), (1581, 12588), (2098, 9486), (2108, 9441), (3147, 6324), (3162, 6294), (4196, 4743)]