398445880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:437

約数の個数: 128

約数和(自身を含む): 1057536000

約数和(自身を除く): 659090120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 59, 70, 89, 118, 140, 178, 236, 271, 280, 295, 356, 413, 445, 472, 542, 590, 623, 712, 826, 890, 1084, 1180, 1246, 1355, 1652, 1780, 1897, 2065, 2168, 2360, 2492, 2710, 3115, 3304, 3560, 3794, 4130, 4984, 5251, 5420, 6230, 7588, 8260, 9485, 10502, 10840, 12460, 15176, 15989, 16520, 18970, 21004, 24119, 24920, 26255, 31978, 36757, 37940, 42008, 48238, 52510, 63956, 73514, 75880, 79945, 96476, 105020, 111923, 120595, 127912, 147028, 159890, 168833, 183785, 192952, 210040, 223846, 241190, 294056, 319780, 337666, 367570, 447692, 482380, 559615, 639560, 675332, 735140, 844165, 895384, 964760, 1119230, 1350664, 1423021, 1470280, 1688330, 2238460, 2846042, 3376660, 4476920, 5692084, 6753320, 7115105, 9961147, 11384168, 14230210, 19922294, 28460420, 39844588, 49805735, 56920840, 79689176, 99611470, 199222940, 398445880]

約数ペア:

[(1, 398445880), (2, 199222940), (4, 99611470), (5, 79689176), (7, 56920840), (8, 49805735), (10, 39844588), (14, 28460420), (20, 19922294), (28, 14230210), (35, 11384168), (40, 9961147), (56, 7115105), (59, 6753320), (70, 5692084), (89, 4476920), (118, 3376660), (140, 2846042), (178, 2238460), (236, 1688330), (271, 1470280), (280, 1423021), (295, 1350664), (356, 1119230), (413, 964760), (445, 895384), (472, 844165), (542, 735140), (590, 675332), (623, 639560), (712, 559615), (826, 482380), (890, 447692), (1084, 367570), (1180, 337666), (1246, 319780), (1355, 294056), (1652, 241190), (1780, 223846), (1897, 210040), (2065, 192952), (2168, 183785), (2360, 168833), (2492, 159890), (2710, 147028), (3115, 127912), (3304, 120595), (3560, 111923), (3794, 105020), (4130, 96476), (4984, 79945), (5251, 75880), (5420, 73514), (6230, 63956), (7588, 52510), (8260, 48238), (9485, 42008), (10502, 37940), (10840, 36757), (12460, 31978), (15176, 26255), (15989, 24920), (16520, 24119), (18970, 21004)]