206458640

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 491754240

約数和(自身を除く): 285295600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 107, 178, 214, 271, 356, 428, 445, 535, 542, 712, 856, 890, 1070, 1084, 1355, 1424, 1712, 1780, 2140, 2168, 2710, 3560, 4280, 4336, 5420, 7120, 8560, 9523, 10840, 19046, 21680, 24119, 28997, 38092, 47615, 48238, 57994, 76184, 95230, 96476, 115988, 120595, 144985, 152368, 190460, 192952, 231976, 241190, 289970, 380920, 385904, 463952, 482380, 579940, 761840, 964760, 1159880, 1929520, 2319760, 2580733, 5161466, 10322932, 12903665, 20645864, 25807330, 41291728, 51614660, 103229320, 206458640]

約数ペア:

[(1, 206458640), (2, 103229320), (4, 51614660), (5, 41291728), (8, 25807330), (10, 20645864), (16, 12903665), (20, 10322932), (40, 5161466), (80, 2580733), (89, 2319760), (107, 1929520), (178, 1159880), (214, 964760), (271, 761840), (356, 579940), (428, 482380), (445, 463952), (535, 385904), (542, 380920), (712, 289970), (856, 241190), (890, 231976), (1070, 192952), (1084, 190460), (1355, 152368), (1424, 144985), (1712, 120595), (1780, 115988), (2140, 96476), (2168, 95230), (2710, 76184), (3560, 57994), (4280, 48238), (4336, 47615), (5420, 38092), (7120, 28997), (8560, 24119), (9523, 21680), (10840, 19046)]