31356990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{353}}^1$

素因数の和:423

約数の個数: 128

約数和(自身を含む): 97873920

約数和(自身を除く): 66516930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 47, 54, 63, 70, 90, 94, 105, 126, 135, 141, 189, 210, 235, 270, 282, 315, 329, 353, 378, 423, 470, 630, 658, 705, 706, 846, 945, 987, 1059, 1269, 1410, 1645, 1765, 1890, 1974, 2115, 2118, 2471, 2538, 2961, 3177, 3290, 3530, 4230, 4935, 4942, 5295, 5922, 6345, 6354, 7413, 8883, 9531, 9870, 10590, 12355, 12690, 14805, 14826, 15885, 16591, 17766, 19062, 22239, 24710, 29610, 31770, 33182, 37065, 44415, 44478, 47655, 49773, 66717, 74130, 82955, 88830, 95310, 99546, 111195, 116137, 133434, 149319, 165910, 222390, 232274, 248865, 298638, 333585, 348411, 447957, 497730, 580685, 667170, 696822, 746595, 895914, 1045233, 1161370, 1493190, 1742055, 2090466, 2239785, 3135699, 3484110, 4479570, 5226165, 6271398, 10452330, 15678495, 31356990]

約数ペア:

[(1, 31356990), (2, 15678495), (3, 10452330), (5, 6271398), (6, 5226165), (7, 4479570), (9, 3484110), (10, 3135699), (14, 2239785), (15, 2090466), (18, 1742055), (21, 1493190), (27, 1161370), (30, 1045233), (35, 895914), (42, 746595), (45, 696822), (47, 667170), (54, 580685), (63, 497730), (70, 447957), (90, 348411), (94, 333585), (105, 298638), (126, 248865), (135, 232274), (141, 222390), (189, 165910), (210, 149319), (235, 133434), (270, 116137), (282, 111195), (315, 99546), (329, 95310), (353, 88830), (378, 82955), (423, 74130), (470, 66717), (630, 49773), (658, 47655), (705, 44478), (706, 44415), (846, 37065), (945, 33182), (987, 31770), (1059, 29610), (1269, 24710), (1410, 22239), (1645, 19062), (1765, 17766), (1890, 16591), (1974, 15885), (2115, 14826), (2118, 14805), (2471, 12690), (2538, 12355), (2961, 10590), (3177, 9870), (3290, 9531), (3530, 8883), (4230, 7413), (4935, 6354), (4942, 6345), (5295, 5922)]