18738405

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:351

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 19968795

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 79, 105, 135, 189, 237, 251, 315, 395, 553, 711, 753, 945, 1185, 1255, 1659, 1757, 2133, 2259, 2765, 3555, 3765, 4977, 5271, 6777, 8295, 8785, 10665, 11295, 14931, 15813, 19829, 24885, 26355, 33885, 47439, 59487, 74655, 79065, 99145, 138803, 178461, 237195, 297435, 416409, 535383, 694015, 892305, 1249227, 2082045, 2676915, 3747681, 6246135, 18738405]

約数ペア:

[(1, 18738405), (3, 6246135), (5, 3747681), (7, 2676915), (9, 2082045), (15, 1249227), (21, 892305), (27, 694015), (35, 535383), (45, 416409), (63, 297435), (79, 237195), (105, 178461), (135, 138803), (189, 99145), (237, 79065), (251, 74655), (315, 59487), (395, 47439), (553, 33885), (711, 26355), (753, 24885), (945, 19829), (1185, 15813), (1255, 14931), (1659, 11295), (1757, 10665), (2133, 8785), (2259, 8295), (2765, 6777), (3555, 5271), (3765, 4977)]