78441975

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:405

約数の個数: 72

約数和(自身を含む): 150883200

約数和(自身を除く): 72441225

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 59, 75, 95, 171, 177, 225, 285, 295, 311, 475, 531, 855, 885, 933, 1121, 1425, 1475, 1555, 2655, 2799, 3363, 4275, 4425, 4665, 5605, 5909, 7775, 10089, 13275, 13995, 16815, 17727, 18349, 23325, 28025, 29545, 50445, 53181, 55047, 69975, 84075, 88635, 91745, 147725, 165141, 252225, 265905, 275235, 348631, 443175, 458725, 825705, 1045893, 1329525, 1376175, 1743155, 3137679, 4128525, 5229465, 8715775, 15688395, 26147325, 78441975]

約数ペア:

[(1, 78441975), (3, 26147325), (5, 15688395), (9, 8715775), (15, 5229465), (19, 4128525), (25, 3137679), (45, 1743155), (57, 1376175), (59, 1329525), (75, 1045893), (95, 825705), (171, 458725), (177, 443175), (225, 348631), (285, 275235), (295, 265905), (311, 252225), (475, 165141), (531, 147725), (855, 91745), (885, 88635), (933, 84075), (1121, 69975), (1425, 55047), (1475, 53181), (1555, 50445), (2655, 29545), (2799, 28025), (3363, 23325), (4275, 18349), (4425, 17727), (4665, 16815), (5605, 13995), (5909, 13275), (7775, 10089)]