81189375

素因数分解:

$3^1\times 5^4\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 80

約数和(自身を含む): 148452480

約数和(自身を除く): 67263105

約数列:

[1, 3, 5, 15, 19, 25, 43, 53, 57, 75, 95, 125, 129, 159, 215, 265, 285, 375, 475, 625, 645, 795, 817, 1007, 1075, 1325, 1425, 1875, 2279, 2375, 2451, 3021, 3225, 3975, 4085, 5035, 5375, 6625, 6837, 7125, 11395, 11875, 12255, 15105, 16125, 19875, 20425, 25175, 26875, 33125, 34185, 35625, 43301, 56975, 61275, 75525, 80625, 99375, 102125, 125875, 129903, 170925, 216505, 284875, 306375, 377625, 510625, 629375, 649515, 854625, 1082525, 1424375, 1531875, 1888125, 3247575, 4273125, 5412625, 16237875, 27063125, 81189375]

約数ペア:

[(1, 81189375), (3, 27063125), (5, 16237875), (15, 5412625), (19, 4273125), (25, 3247575), (43, 1888125), (53, 1531875), (57, 1424375), (75, 1082525), (95, 854625), (125, 649515), (129, 629375), (159, 510625), (215, 377625), (265, 306375), (285, 284875), (375, 216505), (475, 170925), (625, 129903), (645, 125875), (795, 102125), (817, 99375), (1007, 80625), (1075, 75525), (1325, 61275), (1425, 56975), (1875, 43301), (2279, 35625), (2375, 34185), (2451, 33125), (3021, 26875), (3225, 25175), (3975, 20425), (4085, 19875), (5035, 16125), (5375, 15105), (6625, 12255), (6837, 11875), (7125, 11395)]