71292280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 165765600

約数和(自身を除く): 94473320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 181, 215, 229, 344, 362, 430, 458, 724, 860, 905, 916, 1145, 1448, 1720, 1810, 1832, 2290, 3620, 4580, 7240, 7783, 9160, 9847, 15566, 19694, 31132, 38915, 39388, 41449, 49235, 62264, 77830, 78776, 82898, 98470, 155660, 165796, 196940, 207245, 311320, 331592, 393880, 414490, 828980, 1657960, 1782307, 3564614, 7129228, 8911535, 14258456, 17823070, 35646140, 71292280]

約数ペア:

[(1, 71292280), (2, 35646140), (4, 17823070), (5, 14258456), (8, 8911535), (10, 7129228), (20, 3564614), (40, 1782307), (43, 1657960), (86, 828980), (172, 414490), (181, 393880), (215, 331592), (229, 311320), (344, 207245), (362, 196940), (430, 165796), (458, 155660), (724, 98470), (860, 82898), (905, 78776), (916, 77830), (1145, 62264), (1448, 49235), (1720, 41449), (1810, 39388), (1832, 38915), (2290, 31132), (3620, 19694), (4580, 15566), (7240, 9847), (7783, 9160)]