20301885

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 37290240

約数和(自身を除く): 16988355

約数列:

[1, 3, 5, 9, 15, 29, 45, 47, 87, 141, 145, 235, 261, 331, 423, 435, 705, 993, 1305, 1363, 1655, 2115, 2979, 4089, 4965, 6815, 9599, 12267, 14895, 15557, 20445, 28797, 46671, 47995, 61335, 77785, 86391, 140013, 143985, 233355, 431955, 451153, 700065, 1353459, 2255765, 4060377, 6767295, 20301885]

約数ペア:

[(1, 20301885), (3, 6767295), (5, 4060377), (9, 2255765), (15, 1353459), (29, 700065), (45, 451153), (47, 431955), (87, 233355), (141, 143985), (145, 140013), (235, 86391), (261, 77785), (331, 61335), (423, 47995), (435, 46671), (705, 28797), (993, 20445), (1305, 15557), (1363, 14895), (1655, 12267), (2115, 9599), (2979, 6815), (4089, 4965)]