20019285

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 44997120

約数和(自身を除く): 24977835

約数列:

[1, 3, 5, 9, 11, 13, 15, 17, 27, 33, 39, 45, 51, 55, 61, 65, 85, 99, 117, 135, 143, 153, 165, 183, 187, 195, 221, 255, 297, 305, 351, 429, 459, 495, 549, 561, 585, 663, 671, 715, 765, 793, 915, 935, 1037, 1105, 1287, 1485, 1647, 1683, 1755, 1989, 2013, 2145, 2295, 2379, 2431, 2745, 2805, 3111, 3315, 3355, 3861, 3965, 5049, 5185, 5967, 6039, 6435, 7137, 7293, 8235, 8415, 8723, 9333, 9945, 10065, 11407, 11895, 12155, 13481, 15555, 18117, 19305, 21411, 21879, 25245, 26169, 27999, 29835, 30195, 34221, 35685, 36465, 40443, 43615, 46665, 57035, 65637, 67405, 78507, 90585, 102663, 107055, 109395, 121329, 130845, 139995, 148291, 171105, 202215, 235521, 307989, 328185, 363987, 392535, 444873, 513315, 606645, 741455, 1177605, 1334619, 1539945, 1819935, 2224365, 4003857, 6673095, 20019285]

約数ペア:

[(1, 20019285), (3, 6673095), (5, 4003857), (9, 2224365), (11, 1819935), (13, 1539945), (15, 1334619), (17, 1177605), (27, 741455), (33, 606645), (39, 513315), (45, 444873), (51, 392535), (55, 363987), (61, 328185), (65, 307989), (85, 235521), (99, 202215), (117, 171105), (135, 148291), (143, 139995), (153, 130845), (165, 121329), (183, 109395), (187, 107055), (195, 102663), (221, 90585), (255, 78507), (297, 67405), (305, 65637), (351, 57035), (429, 46665), (459, 43615), (495, 40443), (549, 36465), (561, 35685), (585, 34221), (663, 30195), (671, 29835), (715, 27999), (765, 26169), (793, 25245), (915, 21879), (935, 21411), (1037, 19305), (1105, 18117), (1287, 15555), (1485, 13481), (1647, 12155), (1683, 11895), (1755, 11407), (1989, 10065), (2013, 9945), (2145, 9333), (2295, 8723), (2379, 8415), (2431, 8235), (2745, 7293), (2805, 7137), (3111, 6435), (3315, 6039), (3355, 5967), (3861, 5185), (3965, 5049)]