20695220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 54528768

約数和(自身を除く): 33833548

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 83, 91, 130, 137, 140, 166, 182, 260, 274, 332, 364, 415, 455, 548, 581, 685, 830, 910, 959, 1079, 1162, 1370, 1660, 1781, 1820, 1918, 2158, 2324, 2740, 2905, 3562, 3836, 4316, 4795, 5395, 5810, 7124, 7553, 8905, 9590, 10790, 11371, 11620, 12467, 15106, 17810, 19180, 21580, 22742, 24934, 30212, 35620, 37765, 45484, 49868, 56855, 62335, 75530, 79597, 113710, 124670, 147823, 151060, 159194, 227420, 249340, 295646, 318388, 397985, 591292, 739115, 795970, 1034761, 1478230, 1591940, 2069522, 2956460, 4139044, 5173805, 10347610, 20695220]

約数ペア:

[(1, 20695220), (2, 10347610), (4, 5173805), (5, 4139044), (7, 2956460), (10, 2069522), (13, 1591940), (14, 1478230), (20, 1034761), (26, 795970), (28, 739115), (35, 591292), (52, 397985), (65, 318388), (70, 295646), (83, 249340), (91, 227420), (130, 159194), (137, 151060), (140, 147823), (166, 124670), (182, 113710), (260, 79597), (274, 75530), (332, 62335), (364, 56855), (415, 49868), (455, 45484), (548, 37765), (581, 35620), (685, 30212), (830, 24934), (910, 22742), (959, 21580), (1079, 19180), (1162, 17810), (1370, 15106), (1660, 12467), (1781, 11620), (1820, 11371), (1918, 10790), (2158, 9590), (2324, 8905), (2740, 7553), (2905, 7124), (3562, 5810), (3836, 5395), (4316, 4795)]