1388661840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{642899}}^1$

素因数の和:642921

約数の個数: 80

約数和(自身を含む): 4783176000

約数和(自身を除く): 3394514160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 642899, 1285798, 1928697, 2571596, 3214495, 3857394, 5143192, 5786091, 6428990, 7714788, 9643485, 10286384, 11572182, 12857980, 15429576, 17358273, 19286970, 23144364, 25715960, 28930455, 30859152, 34716546, 38573940, 46288728, 51431920, 57860910, 69433092, 77147880, 86791365, 92577456, 115721820, 138866184, 154295760, 173582730, 231443640, 277732368, 347165460, 462887280, 694330920, 1388661840]

約数ペア:

[(1, 1388661840), (2, 694330920), (3, 462887280), (4, 347165460), (5, 277732368), (6, 231443640), (8, 173582730), (9, 154295760), (10, 138866184), (12, 115721820), (15, 92577456), (16, 86791365), (18, 77147880), (20, 69433092), (24, 57860910), (27, 51431920), (30, 46288728), (36, 38573940), (40, 34716546), (45, 30859152), (48, 28930455), (54, 25715960), (60, 23144364), (72, 19286970), (80, 17358273), (90, 15429576), (108, 12857980), (120, 11572182), (135, 10286384), (144, 9643485), (180, 7714788), (216, 6428990), (240, 5786091), (270, 5143192), (360, 3857394), (432, 3214495), (540, 2571596), (720, 1928697), (1080, 1285798), (2160, 642899)]