16905980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1363

約数の個数: 72

約数和(自身を含む): 44509248

約数和(自身を除く): 27603268

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1327, 1820, 2548, 2654, 3185, 5308, 6370, 6635, 9289, 12740, 13270, 17251, 18578, 26540, 34502, 37156, 46445, 65023, 69004, 86255, 92890, 120757, 130046, 172510, 185780, 241514, 260092, 325115, 345020, 483028, 603785, 650230, 845299, 1207570, 1300460, 1690598, 2415140, 3381196, 4226495, 8452990, 16905980]

約数ペア:

[(1, 16905980), (2, 8452990), (4, 4226495), (5, 3381196), (7, 2415140), (10, 1690598), (13, 1300460), (14, 1207570), (20, 845299), (26, 650230), (28, 603785), (35, 483028), (49, 345020), (52, 325115), (65, 260092), (70, 241514), (91, 185780), (98, 172510), (130, 130046), (140, 120757), (182, 92890), (196, 86255), (245, 69004), (260, 65023), (364, 46445), (455, 37156), (490, 34502), (637, 26540), (910, 18578), (980, 17251), (1274, 13270), (1327, 12740), (1820, 9289), (2548, 6635), (2654, 6370), (3185, 5308)]