81772040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:495

約数の個数: 128

約数和(自身を含む): 228614400

約数和(自身を除く): 146842360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 41, 56, 68, 70, 82, 85, 119, 136, 140, 164, 170, 205, 238, 280, 287, 328, 340, 410, 419, 476, 574, 595, 680, 697, 820, 838, 952, 1148, 1190, 1394, 1435, 1640, 1676, 2095, 2296, 2380, 2788, 2870, 2933, 3352, 3485, 4190, 4760, 4879, 5576, 5740, 5866, 6970, 7123, 8380, 9758, 11480, 11732, 13940, 14246, 14665, 16760, 17179, 19516, 23464, 24395, 27880, 28492, 29330, 34358, 35615, 39032, 48790, 49861, 56984, 58660, 68716, 71230, 85895, 97580, 99722, 117320, 120253, 137432, 142460, 171790, 195160, 199444, 240506, 249305, 284920, 292043, 343580, 398888, 481012, 498610, 584086, 601265, 687160, 962024, 997220, 1168172, 1202530, 1460215, 1994440, 2044301, 2336344, 2405060, 2920430, 4088602, 4810120, 5840860, 8177204, 10221505, 11681720, 16354408, 20443010, 40886020, 81772040]

約数ペア:

[(1, 81772040), (2, 40886020), (4, 20443010), (5, 16354408), (7, 11681720), (8, 10221505), (10, 8177204), (14, 5840860), (17, 4810120), (20, 4088602), (28, 2920430), (34, 2405060), (35, 2336344), (40, 2044301), (41, 1994440), (56, 1460215), (68, 1202530), (70, 1168172), (82, 997220), (85, 962024), (119, 687160), (136, 601265), (140, 584086), (164, 498610), (170, 481012), (205, 398888), (238, 343580), (280, 292043), (287, 284920), (328, 249305), (340, 240506), (410, 199444), (419, 195160), (476, 171790), (574, 142460), (595, 137432), (680, 120253), (697, 117320), (820, 99722), (838, 97580), (952, 85895), (1148, 71230), (1190, 68716), (1394, 58660), (1435, 56984), (1640, 49861), (1676, 48790), (2095, 39032), (2296, 35615), (2380, 34358), (2788, 29330), (2870, 28492), (2933, 27880), (3352, 24395), (3485, 23464), (4190, 19516), (4760, 17179), (4879, 16760), (5576, 14665), (5740, 14246), (5866, 13940), (6970, 11732), (7123, 11480), (8380, 9758)]