20197100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:136

約数の個数: 144

約数和(自身を含む): 56829696

約数和(自身を除く): 36632596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 43, 44, 50, 55, 61, 70, 77, 86, 100, 110, 122, 140, 154, 172, 175, 215, 220, 244, 275, 301, 305, 308, 350, 385, 427, 430, 473, 550, 602, 610, 671, 700, 770, 854, 860, 946, 1075, 1100, 1204, 1220, 1342, 1505, 1525, 1540, 1708, 1892, 1925, 2135, 2150, 2365, 2623, 2684, 3010, 3050, 3311, 3355, 3850, 4270, 4300, 4697, 4730, 5246, 6020, 6100, 6622, 6710, 7525, 7700, 8540, 9394, 9460, 10492, 10675, 11825, 13115, 13244, 13420, 15050, 16555, 16775, 18361, 18788, 21350, 23485, 23650, 26230, 28853, 30100, 33110, 33550, 36722, 42700, 46970, 47300, 52460, 57706, 65575, 66220, 67100, 73444, 82775, 91805, 93940, 115412, 117425, 131150, 144265, 165550, 183610, 201971, 234850, 262300, 288530, 331100, 367220, 403942, 459025, 469700, 577060, 721325, 807884, 918050, 1009855, 1442650, 1836100, 2019710, 2885300, 4039420, 5049275, 10098550, 20197100]

約数ペア:

[(1, 20197100), (2, 10098550), (4, 5049275), (5, 4039420), (7, 2885300), (10, 2019710), (11, 1836100), (14, 1442650), (20, 1009855), (22, 918050), (25, 807884), (28, 721325), (35, 577060), (43, 469700), (44, 459025), (50, 403942), (55, 367220), (61, 331100), (70, 288530), (77, 262300), (86, 234850), (100, 201971), (110, 183610), (122, 165550), (140, 144265), (154, 131150), (172, 117425), (175, 115412), (215, 93940), (220, 91805), (244, 82775), (275, 73444), (301, 67100), (305, 66220), (308, 65575), (350, 57706), (385, 52460), (427, 47300), (430, 46970), (473, 42700), (550, 36722), (602, 33550), (610, 33110), (671, 30100), (700, 28853), (770, 26230), (854, 23650), (860, 23485), (946, 21350), (1075, 18788), (1100, 18361), (1204, 16775), (1220, 16555), (1342, 15050), (1505, 13420), (1525, 13244), (1540, 13115), (1708, 11825), (1892, 10675), (1925, 10492), (2135, 9460), (2150, 9394), (2365, 8540), (2623, 7700), (2684, 7525), (3010, 6710), (3050, 6622), (3311, 6100), (3355, 6020), (3850, 5246), (4270, 4730), (4300, 4697)]