661888256

素因数分解:

$2^8\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3319}}^1$

素因数の和:3395

約数の個数: 72

約数和(自身を含む): 1425076800

約数和(自身を除く): 763188544

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 41, 64, 76, 82, 128, 152, 164, 256, 304, 328, 608, 656, 779, 1216, 1312, 1558, 2432, 2624, 3116, 3319, 4864, 5248, 6232, 6638, 10496, 12464, 13276, 24928, 26552, 49856, 53104, 63061, 99712, 106208, 126122, 136079, 199424, 212416, 252244, 272158, 424832, 504488, 544316, 849664, 1008976, 1088632, 2017952, 2177264, 2585501, 4035904, 4354528, 5171002, 8071808, 8709056, 10342004, 16143616, 17418112, 20684008, 34836224, 41368016, 82736032, 165472064, 330944128, 661888256]

約数ペア:

[(1, 661888256), (2, 330944128), (4, 165472064), (8, 82736032), (16, 41368016), (19, 34836224), (32, 20684008), (38, 17418112), (41, 16143616), (64, 10342004), (76, 8709056), (82, 8071808), (128, 5171002), (152, 4354528), (164, 4035904), (256, 2585501), (304, 2177264), (328, 2017952), (608, 1088632), (656, 1008976), (779, 849664), (1216, 544316), (1312, 504488), (1558, 424832), (2432, 272158), (2624, 252244), (3116, 212416), (3319, 199424), (4864, 136079), (5248, 126122), (6232, 106208), (6638, 99712), (10496, 63061), (12464, 53104), (13276, 49856), (24928, 26552)]