258517140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{87931}}^1$

素因数の和:87957

約数の個数: 72

約数和(自身を含む): 842036832

約数和(自身を除く): 583519692

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, 87931, 175862, 263793, 351724, 439655, 527586, 615517, 879310, 1055172, 1231034, 1318965, 1758620, 1846551, 2462068, 2637930, 3077585, 3693102, 4308619, 5275860, 6155170, 7386204, 8617238, 9232755, 12310340, 12925857, 17234476, 18465510, 21543095, 25851714, 36931020, 43086190, 51703428, 64629285, 86172380, 129258570, 258517140]

約数ペア:

[(1, 258517140), (2, 129258570), (3, 86172380), (4, 64629285), (5, 51703428), (6, 43086190), (7, 36931020), (10, 25851714), (12, 21543095), (14, 18465510), (15, 17234476), (20, 12925857), (21, 12310340), (28, 9232755), (30, 8617238), (35, 7386204), (42, 6155170), (49, 5275860), (60, 4308619), (70, 3693102), (84, 3077585), (98, 2637930), (105, 2462068), (140, 1846551), (147, 1758620), (196, 1318965), (210, 1231034), (245, 1055172), (294, 879310), (420, 615517), (490, 527586), (588, 439655), (735, 351724), (980, 263793), (1470, 175862), (2940, 87931)]