28215460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 75075840

約数和(自身を除く): 46860380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 52, 65, 70, 74, 91, 130, 140, 148, 182, 185, 259, 260, 364, 370, 419, 455, 481, 518, 740, 838, 910, 962, 1036, 1295, 1676, 1820, 1924, 2095, 2405, 2590, 2933, 3367, 4190, 4810, 5180, 5447, 5866, 6734, 8380, 9620, 10894, 11732, 13468, 14665, 15503, 16835, 21788, 27235, 29330, 31006, 33670, 38129, 54470, 58660, 62012, 67340, 76258, 77515, 108521, 108940, 152516, 155030, 190645, 201539, 217042, 310060, 381290, 403078, 434084, 542605, 762580, 806156, 1007695, 1085210, 1410773, 2015390, 2170420, 2821546, 4030780, 5643092, 7053865, 14107730, 28215460]

約数ペア:

[(1, 28215460), (2, 14107730), (4, 7053865), (5, 5643092), (7, 4030780), (10, 2821546), (13, 2170420), (14, 2015390), (20, 1410773), (26, 1085210), (28, 1007695), (35, 806156), (37, 762580), (52, 542605), (65, 434084), (70, 403078), (74, 381290), (91, 310060), (130, 217042), (140, 201539), (148, 190645), (182, 155030), (185, 152516), (259, 108940), (260, 108521), (364, 77515), (370, 76258), (419, 67340), (455, 62012), (481, 58660), (518, 54470), (740, 38129), (838, 33670), (910, 31006), (962, 29330), (1036, 27235), (1295, 21788), (1676, 16835), (1820, 15503), (1924, 14665), (2095, 13468), (2405, 11732), (2590, 10894), (2933, 9620), (3367, 8380), (4190, 6734), (4810, 5866), (5180, 5447)]