28490240

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:413

約数の個数: 80

約数和(自身を含む): 70709760

約数和(自身を除く): 42219520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 359, 496, 512, 620, 640, 718, 992, 1240, 1280, 1436, 1795, 1984, 2480, 2560, 2872, 3590, 3968, 4960, 5744, 7180, 7936, 9920, 11129, 11488, 14360, 15872, 19840, 22258, 22976, 28720, 39680, 44516, 45952, 55645, 57440, 79360, 89032, 91904, 111290, 114880, 178064, 183808, 222580, 229760, 356128, 445160, 459520, 712256, 890320, 919040, 1424512, 1780640, 2849024, 3561280, 5698048, 7122560, 14245120, 28490240]

約数ペア:

[(1, 28490240), (2, 14245120), (4, 7122560), (5, 5698048), (8, 3561280), (10, 2849024), (16, 1780640), (20, 1424512), (31, 919040), (32, 890320), (40, 712256), (62, 459520), (64, 445160), (80, 356128), (124, 229760), (128, 222580), (155, 183808), (160, 178064), (248, 114880), (256, 111290), (310, 91904), (320, 89032), (359, 79360), (496, 57440), (512, 55645), (620, 45952), (640, 44516), (718, 39680), (992, 28720), (1240, 22976), (1280, 22258), (1436, 19840), (1795, 15872), (1984, 14360), (2480, 11488), (2560, 11129), (2872, 9920), (3590, 7936), (3968, 7180), (4960, 5744)]