20259960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 70502400

約数和(自身を除く): 50242440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 89, 105, 120, 140, 168, 178, 210, 267, 271, 280, 356, 420, 445, 534, 542, 623, 712, 813, 840, 890, 1068, 1084, 1246, 1335, 1355, 1626, 1780, 1869, 1897, 2136, 2168, 2492, 2670, 2710, 3115, 3252, 3560, 3738, 3794, 4065, 4984, 5340, 5420, 5691, 6230, 6504, 7476, 7588, 8130, 9345, 9485, 10680, 10840, 11382, 12460, 14952, 15176, 16260, 18690, 18970, 22764, 24119, 24920, 28455, 32520, 37380, 37940, 45528, 48238, 56910, 72357, 74760, 75880, 96476, 113820, 120595, 144714, 168833, 192952, 227640, 241190, 289428, 337666, 361785, 482380, 506499, 578856, 675332, 723570, 844165, 964760, 1012998, 1350664, 1447140, 1688330, 2025996, 2532495, 2894280, 3376660, 4051992, 5064990, 6753320, 10129980, 20259960]

約数ペア:

[(1, 20259960), (2, 10129980), (3, 6753320), (4, 5064990), (5, 4051992), (6, 3376660), (7, 2894280), (8, 2532495), (10, 2025996), (12, 1688330), (14, 1447140), (15, 1350664), (20, 1012998), (21, 964760), (24, 844165), (28, 723570), (30, 675332), (35, 578856), (40, 506499), (42, 482380), (56, 361785), (60, 337666), (70, 289428), (84, 241190), (89, 227640), (105, 192952), (120, 168833), (140, 144714), (168, 120595), (178, 113820), (210, 96476), (267, 75880), (271, 74760), (280, 72357), (356, 56910), (420, 48238), (445, 45528), (534, 37940), (542, 37380), (623, 32520), (712, 28455), (813, 24920), (840, 24119), (890, 22764), (1068, 18970), (1084, 18690), (1246, 16260), (1335, 15176), (1355, 14952), (1626, 12460), (1780, 11382), (1869, 10840), (1897, 10680), (2136, 9485), (2168, 9345), (2492, 8130), (2670, 7588), (2710, 7476), (3115, 6504), (3252, 6230), (3560, 5691), (3738, 5420), (3794, 5340), (4065, 4984)]