21999105

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 40856400

約数和(自身を除く): 18857295

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 149, 153, 193, 255, 447, 579, 745, 765, 965, 1341, 1737, 2235, 2533, 2895, 3281, 6705, 7599, 8685, 9843, 12665, 16405, 22797, 28757, 29529, 37995, 49215, 86271, 113985, 143785, 147645, 258813, 431355, 488869, 1294065, 1466607, 2444345, 4399821, 7333035, 21999105]

約数ペア:

[(1, 21999105), (3, 7333035), (5, 4399821), (9, 2444345), (15, 1466607), (17, 1294065), (45, 488869), (51, 431355), (85, 258813), (149, 147645), (153, 143785), (193, 113985), (255, 86271), (447, 49215), (579, 37995), (745, 29529), (765, 28757), (965, 22797), (1341, 16405), (1737, 12665), (2235, 9843), (2533, 8685), (2895, 7599), (3281, 6705)]