21139024

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:188

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26000816

約数列:

[1, 2, 4, 8, 16, 17, 23, 31, 34, 46, 62, 68, 92, 109, 124, 136, 184, 218, 248, 272, 368, 391, 436, 496, 527, 713, 782, 872, 1054, 1426, 1564, 1744, 1853, 2108, 2507, 2852, 3128, 3379, 3706, 4216, 5014, 5704, 6256, 6758, 7412, 8432, 10028, 11408, 12121, 13516, 14824, 20056, 24242, 27032, 29648, 40112, 42619, 48484, 54064, 57443, 77717, 85238, 96968, 114886, 155434, 170476, 193936, 229772, 310868, 340952, 459544, 621736, 681904, 919088, 1243472, 1321189, 2642378, 5284756, 10569512, 21139024]

約数ペア:

[(1, 21139024), (2, 10569512), (4, 5284756), (8, 2642378), (16, 1321189), (17, 1243472), (23, 919088), (31, 681904), (34, 621736), (46, 459544), (62, 340952), (68, 310868), (92, 229772), (109, 193936), (124, 170476), (136, 155434), (184, 114886), (218, 96968), (248, 85238), (272, 77717), (368, 57443), (391, 54064), (436, 48484), (496, 42619), (527, 40112), (713, 29648), (782, 27032), (872, 24242), (1054, 20056), (1426, 14824), (1564, 13516), (1744, 12121), (1853, 11408), (2108, 10028), (2507, 8432), (2852, 7412), (3128, 6758), (3379, 6256), (3706, 5704), (4216, 5014)]