31721728

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 72

約数和(自身を含む): 69205752

約数和(自身を除く): 37484024

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 64, 68, 74, 128, 136, 148, 197, 256, 272, 296, 394, 544, 592, 629, 788, 1088, 1184, 1258, 1576, 2176, 2368, 2516, 3152, 3349, 4352, 4736, 5032, 6304, 6698, 7289, 9472, 10064, 12608, 13396, 14578, 20128, 25216, 26792, 29156, 40256, 50432, 53584, 58312, 80512, 107168, 116624, 123913, 161024, 214336, 233248, 247826, 428672, 466496, 495652, 857344, 932992, 991304, 1865984, 1982608, 3965216, 7930432, 15860864, 31721728]

約数ペア:

[(1, 31721728), (2, 15860864), (4, 7930432), (8, 3965216), (16, 1982608), (17, 1865984), (32, 991304), (34, 932992), (37, 857344), (64, 495652), (68, 466496), (74, 428672), (128, 247826), (136, 233248), (148, 214336), (197, 161024), (256, 123913), (272, 116624), (296, 107168), (394, 80512), (544, 58312), (592, 53584), (629, 50432), (788, 40256), (1088, 29156), (1184, 26792), (1258, 25216), (1576, 20128), (2176, 14578), (2368, 13396), (2516, 12608), (3152, 10064), (3349, 9472), (4352, 7289), (4736, 6698), (5032, 6304)]