15720180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{5347}}^1$

素因数の和:5373

約数の個数: 72

約数和(自身を含む): 51212448

約数和(自身を除く): 35492268

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 5347, 10694, 16041, 21388, 26735, 32082, 37429, 53470, 64164, 74858, 80205, 106940, 112287, 149716, 160410, 187145, 224574, 262003, 320820, 374290, 449148, 524006, 561435, 748580, 786009, 1048012, 1122870, 1310015, 1572018, 2245740, 2620030, 3144036, 3930045, 5240060, 7860090, 15720180]

約数ペア:

[(1, 15720180), (2, 7860090), (3, 5240060), (4, 3930045), (5, 3144036), (6, 2620030), (7, 2245740), (10, 1572018), (12, 1310015), (14, 1122870), (15, 1048012), (20, 786009), (21, 748580), (28, 561435), (30, 524006), (35, 449148), (42, 374290), (49, 320820), (60, 262003), (70, 224574), (84, 187145), (98, 160410), (105, 149716), (140, 112287), (147, 106940), (196, 80205), (210, 74858), (245, 64164), (294, 53470), (420, 37429), (490, 32082), (588, 26735), (735, 21388), (980, 16041), (1470, 10694), (2940, 5347)]