77881475

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{397}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 118444800

約数和(自身を除く): 40563325

約数列:

[1, 5, 7, 19, 25, 35, 59, 95, 133, 175, 295, 397, 413, 475, 665, 1121, 1475, 1985, 2065, 2779, 3325, 5605, 7543, 7847, 9925, 10325, 13895, 23423, 28025, 37715, 39235, 52801, 69475, 117115, 163961, 188575, 196175, 264005, 445037, 585575, 819805, 1320025, 2225185, 3115259, 4099025, 11125925, 15576295, 77881475]

約数ペア:

[(1, 77881475), (5, 15576295), (7, 11125925), (19, 4099025), (25, 3115259), (35, 2225185), (59, 1320025), (95, 819805), (133, 585575), (175, 445037), (295, 264005), (397, 196175), (413, 188575), (475, 163961), (665, 117115), (1121, 69475), (1475, 52801), (1985, 39235), (2065, 37715), (2779, 28025), (3325, 23423), (5605, 13895), (7543, 10325), (7847, 9925)]