21596320

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^2\times {\mathrm{73}}^1$

素因数の和:174

約数の個数: 72

約数和(自身を含む): 52950996

約数和(自身を除く): 31354676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 73, 80, 86, 146, 160, 172, 215, 292, 344, 365, 430, 584, 688, 730, 860, 1168, 1376, 1460, 1720, 1849, 2336, 2920, 3139, 3440, 3698, 5840, 6278, 6880, 7396, 9245, 11680, 12556, 14792, 15695, 18490, 25112, 29584, 31390, 36980, 50224, 59168, 62780, 73960, 100448, 125560, 134977, 147920, 251120, 269954, 295840, 502240, 539908, 674885, 1079816, 1349770, 2159632, 2699540, 4319264, 5399080, 10798160, 21596320]

約数ペア:

[(1, 21596320), (2, 10798160), (4, 5399080), (5, 4319264), (8, 2699540), (10, 2159632), (16, 1349770), (20, 1079816), (32, 674885), (40, 539908), (43, 502240), (73, 295840), (80, 269954), (86, 251120), (146, 147920), (160, 134977), (172, 125560), (215, 100448), (292, 73960), (344, 62780), (365, 59168), (430, 50224), (584, 36980), (688, 31390), (730, 29584), (860, 25112), (1168, 18490), (1376, 15695), (1460, 14792), (1720, 12556), (1849, 11680), (2336, 9245), (2920, 7396), (3139, 6880), (3440, 6278), (3698, 5840)]