18275625

素因数分解:

$3^4\times 5^4\times {\mathrm{19}}^2$

素因数の和:70

約数の個数: 75

約数和(自身を含む): 36004881

約数和(自身を除く): 17729256

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 125, 135, 171, 225, 285, 361, 375, 405, 475, 513, 625, 675, 855, 1083, 1125, 1425, 1539, 1805, 1875, 2025, 2375, 2565, 3249, 3375, 4275, 5415, 5625, 7125, 7695, 9025, 9747, 10125, 11875, 12825, 16245, 16875, 21375, 27075, 29241, 35625, 38475, 45125, 48735, 50625, 64125, 81225, 106875, 135375, 146205, 192375, 225625, 243675, 320625, 406125, 676875, 731025, 961875, 1218375, 2030625, 3655125, 6091875, 18275625]

約数ペア:

[(1, 18275625), (3, 6091875), (5, 3655125), (9, 2030625), (15, 1218375), (19, 961875), (25, 731025), (27, 676875), (45, 406125), (57, 320625), (75, 243675), (81, 225625), (95, 192375), (125, 146205), (135, 135375), (171, 106875), (225, 81225), (285, 64125), (361, 50625), (375, 48735), (405, 45125), (475, 38475), (513, 35625), (625, 29241), (675, 27075), (855, 21375), (1083, 16875), (1125, 16245), (1425, 12825), (1539, 11875), (1805, 10125), (1875, 9747), (2025, 9025), (2375, 7695), (2565, 7125), (3249, 5625), (3375, 5415)]