81261375

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:321

約数の個数: 64

約数和(自身を含む): 148162560

約数和(自身を除く): 66901185

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 79, 125, 195, 211, 237, 325, 375, 395, 633, 975, 1027, 1055, 1185, 1625, 1975, 2743, 3081, 3165, 4875, 5135, 5275, 5925, 8229, 9875, 13715, 15405, 15825, 16669, 25675, 26375, 29625, 41145, 50007, 68575, 77025, 79125, 83345, 128375, 205725, 216697, 250035, 342875, 385125, 416725, 650091, 1028625, 1083485, 1250175, 2083625, 3250455, 5417425, 6250875, 16252275, 27087125, 81261375]

約数ペア:

[(1, 81261375), (3, 27087125), (5, 16252275), (13, 6250875), (15, 5417425), (25, 3250455), (39, 2083625), (65, 1250175), (75, 1083485), (79, 1028625), (125, 650091), (195, 416725), (211, 385125), (237, 342875), (325, 250035), (375, 216697), (395, 205725), (633, 128375), (975, 83345), (1027, 79125), (1055, 77025), (1185, 68575), (1625, 50007), (1975, 41145), (2743, 29625), (3081, 26375), (3165, 25675), (4875, 16669), (5135, 15825), (5275, 15405), (5925, 13715), (8229, 9875)]