77911875

素因数分解:

$3^8\times 5^4\times {\mathrm{19}}^1$

素因数の和:63

約数の個数: 90

約数和(自身を含む): 153716420

約数和(自身を除く): 75804545

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 125, 135, 171, 225, 243, 285, 375, 405, 475, 513, 625, 675, 729, 855, 1125, 1215, 1425, 1539, 1875, 2025, 2187, 2375, 2565, 3375, 3645, 4275, 4617, 5625, 6075, 6561, 7125, 7695, 10125, 10935, 11875, 12825, 13851, 16875, 18225, 21375, 23085, 30375, 32805, 35625, 38475, 41553, 50625, 54675, 64125, 69255, 91125, 106875, 115425, 124659, 151875, 164025, 192375, 207765, 273375, 320625, 346275, 455625, 577125, 623295, 820125, 961875, 1038825, 1366875, 1731375, 2885625, 3116475, 4100625, 5194125, 8656875, 15582375, 25970625, 77911875]

約数ペア:

[(1, 77911875), (3, 25970625), (5, 15582375), (9, 8656875), (15, 5194125), (19, 4100625), (25, 3116475), (27, 2885625), (45, 1731375), (57, 1366875), (75, 1038825), (81, 961875), (95, 820125), (125, 623295), (135, 577125), (171, 455625), (225, 346275), (243, 320625), (285, 273375), (375, 207765), (405, 192375), (475, 164025), (513, 151875), (625, 124659), (675, 115425), (729, 106875), (855, 91125), (1125, 69255), (1215, 64125), (1425, 54675), (1539, 50625), (1875, 41553), (2025, 38475), (2187, 35625), (2375, 32805), (2565, 30375), (3375, 23085), (3645, 21375), (4275, 18225), (4617, 16875), (5625, 13851), (6075, 12825), (6561, 11875), (7125, 10935), (7695, 10125)]