81314775

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{827}}^1$

素因数の和:885

約数の個数: 72

約数和(自身を含む): 160168320

約数和(自身を除く): 78853545

約数列:

[1, 3, 5, 9, 15, 19, 23, 25, 45, 57, 69, 75, 95, 115, 171, 207, 225, 285, 345, 437, 475, 575, 827, 855, 1035, 1311, 1425, 1725, 2185, 2481, 3933, 4135, 4275, 5175, 6555, 7443, 10925, 12405, 15713, 19021, 19665, 20675, 32775, 37215, 47139, 57063, 62025, 78565, 95105, 98325, 141417, 171189, 186075, 235695, 285315, 361399, 392825, 475525, 707085, 855945, 1084197, 1178475, 1426575, 1806995, 3252591, 3535425, 4279725, 5420985, 9034975, 16262955, 27104925, 81314775]

約数ペア:

[(1, 81314775), (3, 27104925), (5, 16262955), (9, 9034975), (15, 5420985), (19, 4279725), (23, 3535425), (25, 3252591), (45, 1806995), (57, 1426575), (69, 1178475), (75, 1084197), (95, 855945), (115, 707085), (171, 475525), (207, 392825), (225, 361399), (285, 285315), (345, 235695), (437, 186075), (475, 171189), (575, 141417), (827, 98325), (855, 95105), (1035, 78565), (1311, 62025), (1425, 57063), (1725, 47139), (2185, 37215), (2481, 32775), (3933, 20675), (4135, 19665), (4275, 19021), (5175, 15713), (6555, 12405), (7443, 10925)]