1645608965

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1669}}^1$

素因数の和:1902

約数の個数: 64

約数和(自身を含む): 2666442240

約数和(自身を除く): 1020833275

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 197, 385, 455, 715, 985, 1001, 1379, 1669, 2167, 2561, 5005, 6895, 8345, 10835, 11683, 12805, 15169, 17927, 18359, 21697, 28171, 58415, 75845, 89635, 91795, 108485, 128513, 140855, 151879, 197197, 238667, 328793, 642565, 759395, 985985, 1193335, 1643965, 1670669, 2301551, 3616723, 4274309, 8353345, 11507755, 18083615, 21371545, 25317061, 29920163, 47017399, 126585305, 149600815, 235086995, 329121793, 1645608965]

約数ペア:

[(1, 1645608965), (5, 329121793), (7, 235086995), (11, 149600815), (13, 126585305), (35, 47017399), (55, 29920163), (65, 25317061), (77, 21371545), (91, 18083615), (143, 11507755), (197, 8353345), (385, 4274309), (455, 3616723), (715, 2301551), (985, 1670669), (1001, 1643965), (1379, 1193335), (1669, 985985), (2167, 759395), (2561, 642565), (5005, 328793), (6895, 238667), (8345, 197197), (10835, 151879), (11683, 140855), (12805, 128513), (15169, 108485), (17927, 91795), (18359, 89635), (21697, 75845), (28171, 58415)]