125678140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{257}}^1\times {\mathrm{499}}^1$

素因数の和:779

約数の個数: 72

約数和(自身を含む): 308826000

約数和(自身を除く): 183147860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 490, 499, 514, 980, 998, 1028, 1285, 1799, 1996, 2495, 2570, 3493, 3598, 4990, 5140, 6986, 7196, 8995, 9980, 12593, 13972, 17465, 17990, 24451, 25186, 34930, 35980, 48902, 50372, 62965, 69860, 97804, 122255, 125930, 128243, 244510, 251860, 256486, 489020, 512972, 641215, 897701, 1282430, 1795402, 2564860, 3590804, 4488505, 6283907, 8977010, 12567814, 17954020, 25135628, 31419535, 62839070, 125678140]

約数ペア:

[(1, 125678140), (2, 62839070), (4, 31419535), (5, 25135628), (7, 17954020), (10, 12567814), (14, 8977010), (20, 6283907), (28, 4488505), (35, 3590804), (49, 2564860), (70, 1795402), (98, 1282430), (140, 897701), (196, 641215), (245, 512972), (257, 489020), (490, 256486), (499, 251860), (514, 244510), (980, 128243), (998, 125930), (1028, 122255), (1285, 97804), (1799, 69860), (1996, 62965), (2495, 50372), (2570, 48902), (3493, 35980), (3598, 34930), (4990, 25186), (5140, 24451), (6986, 17990), (7196, 17465), (8995, 13972), (9980, 12593)]