399391538

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2441}}^1$

素因数の和:2523

約数の個数: 64

約数和(自身を含む): 787691520

約数和(自身を除く): 388299982

約数列:

[1, 2, 7, 13, 14, 26, 29, 31, 58, 62, 91, 182, 203, 217, 377, 403, 406, 434, 754, 806, 899, 1798, 2441, 2639, 2821, 4882, 5278, 5642, 6293, 11687, 12586, 17087, 23374, 31733, 34174, 63466, 70789, 75671, 81809, 141578, 151342, 163618, 222131, 444262, 495523, 529697, 920257, 983723, 991046, 1059394, 1840514, 1967446, 2194459, 4388918, 6441799, 6886061, 12883598, 13772122, 15361213, 28527967, 30722426, 57055934, 199695769, 399391538]

約数ペア:

[(1, 399391538), (2, 199695769), (7, 57055934), (13, 30722426), (14, 28527967), (26, 15361213), (29, 13772122), (31, 12883598), (58, 6886061), (62, 6441799), (91, 4388918), (182, 2194459), (203, 1967446), (217, 1840514), (377, 1059394), (403, 991046), (406, 983723), (434, 920257), (754, 529697), (806, 495523), (899, 444262), (1798, 222131), (2441, 163618), (2639, 151342), (2821, 141578), (4882, 81809), (5278, 75671), (5642, 70789), (6293, 63466), (11687, 34174), (12586, 31733), (17087, 23374)]