20713420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{599}}^1$

素因数の和:647

約数の個数: 96

約数和(自身を含む): 56448000

約数和(自身を除く): 35734580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 494, 532, 599, 665, 910, 988, 1198, 1235, 1330, 1729, 1820, 2396, 2470, 2660, 2995, 3458, 4193, 4940, 5990, 6916, 7787, 8386, 8645, 11381, 11980, 15574, 16772, 17290, 20965, 22762, 31148, 34580, 38935, 41930, 45524, 54509, 56905, 77870, 79667, 83860, 109018, 113810, 147953, 155740, 159334, 218036, 227620, 272545, 295906, 318668, 398335, 545090, 591812, 739765, 796670, 1035671, 1090180, 1479530, 1593340, 2071342, 2959060, 4142684, 5178355, 10356710, 20713420]

約数ペア:

[(1, 20713420), (2, 10356710), (4, 5178355), (5, 4142684), (7, 2959060), (10, 2071342), (13, 1593340), (14, 1479530), (19, 1090180), (20, 1035671), (26, 796670), (28, 739765), (35, 591812), (38, 545090), (52, 398335), (65, 318668), (70, 295906), (76, 272545), (91, 227620), (95, 218036), (130, 159334), (133, 155740), (140, 147953), (182, 113810), (190, 109018), (247, 83860), (260, 79667), (266, 77870), (364, 56905), (380, 54509), (455, 45524), (494, 41930), (532, 38935), (599, 34580), (665, 31148), (910, 22762), (988, 20965), (1198, 17290), (1235, 16772), (1330, 15574), (1729, 11980), (1820, 11381), (2396, 8645), (2470, 8386), (2660, 7787), (2995, 6916), (3458, 5990), (4193, 4940)]