123420920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:349

約数の個数: 128

約数和(自身を含む): 334540800

約数和(自身を除く): 211119880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 59, 62, 70, 118, 124, 140, 155, 217, 236, 241, 248, 280, 295, 310, 413, 434, 472, 482, 590, 620, 826, 868, 964, 1085, 1180, 1205, 1240, 1652, 1687, 1736, 1829, 1928, 2065, 2170, 2360, 2410, 3304, 3374, 3658, 4130, 4340, 4820, 6748, 7316, 7471, 8260, 8435, 8680, 9145, 9640, 12803, 13496, 14219, 14632, 14942, 16520, 16870, 18290, 25606, 28438, 29884, 33740, 36580, 37355, 51212, 52297, 56876, 59768, 64015, 67480, 71095, 73160, 74710, 99533, 102424, 104594, 113752, 128030, 142190, 149420, 199066, 209188, 256060, 261485, 284380, 298840, 398132, 418376, 440789, 497665, 512120, 522970, 568760, 796264, 881578, 995330, 1045940, 1763156, 1990660, 2091880, 2203945, 3085523, 3526312, 3981320, 4407890, 6171046, 8815780, 12342092, 15427615, 17631560, 24684184, 30855230, 61710460, 123420920]

約数ペア:

[(1, 123420920), (2, 61710460), (4, 30855230), (5, 24684184), (7, 17631560), (8, 15427615), (10, 12342092), (14, 8815780), (20, 6171046), (28, 4407890), (31, 3981320), (35, 3526312), (40, 3085523), (56, 2203945), (59, 2091880), (62, 1990660), (70, 1763156), (118, 1045940), (124, 995330), (140, 881578), (155, 796264), (217, 568760), (236, 522970), (241, 512120), (248, 497665), (280, 440789), (295, 418376), (310, 398132), (413, 298840), (434, 284380), (472, 261485), (482, 256060), (590, 209188), (620, 199066), (826, 149420), (868, 142190), (964, 128030), (1085, 113752), (1180, 104594), (1205, 102424), (1240, 99533), (1652, 74710), (1687, 73160), (1736, 71095), (1829, 67480), (1928, 64015), (2065, 59768), (2170, 56876), (2360, 52297), (2410, 51212), (3304, 37355), (3374, 36580), (3658, 33740), (4130, 29884), (4340, 28438), (4820, 25606), (6748, 18290), (7316, 16870), (7471, 16520), (8260, 14942), (8435, 14632), (8680, 14219), (9145, 13496), (9640, 12803)]